How To: Air/Fuel Ratio Gauge Install

[LinuxRacr]

At the request of many members, here is a little how-to on installing the A/F Ratio Gauge.

Helpful Items for install:

*Protege Wireing Diagram book for you year
*10 mm deep socket with extentions
*3M Electrical splices AWG 14-18(no ghetto wire twisting or you will regret it later!)
*Assorted Bute Connectors AWG 14-18
*Loop Anchor connector AWG 14-18

1. There are 2 spots where you can splice into the signal wire for the 1st O2 sensor:
-At the 1st O2 connector Harness under the hood
-At the 1st O2 connector Harness at the ECU

Pick a place. If you splice in at the ECU, the wire you need is coming from ECU PIN # 60. This is the signal wire. It is a Pink Wire with a Blue stripe (P/L).
The ECU is located on the passengerside, under the carpet. You will need to remove the doorsill, and the passengerside kick pannel to pull back the carpet. The ECU aluminum cover plate will then be visible. This is where you will need the 10mm socket, as there are 4 nuts holding it in place. After removing the nuts, you will need to flip the metal cover over. I advise use of leather gloves, or a cloth to handle the edges of the cover. THEY WILL CUT YOU!! After fliping over the cover, the ECU will be visible. The ECU harness connector has a bolt holding it to the ECU. Time for the 10mm socket again. Looking at the top of the ECU harness connector, you can see that the pin holes are numbered. Find wire number 60 and splice in there.

Here is a picture of the location of the ECU:
http://www.gvii.net/dlralt/protege/installation_photos/082602_ecu.jpg

Here are some pictures of where I spliced into my 1st O2 sensor to give you an Idea of the underhood location:
http://www.mazdamp3.com/members/LinuxRacr/1st o2 sensor.jpg
http://www.mazdamp3.com/members/LinuxRacr/blue-pink on harness tapped.jpg
And here is the entire album:
http://photos.yahoo.com/bc/linuxracr/lst?.dir=/A-Pillar+Shots&.view=t

To hook to the gauge itself, you will have to route through the firewall on the driver's side.

The A/F gauge itself usually has a positive (+) 12v wire, a ground (-), and the signal wire (that goes to pin #60). Find a suitable +12v source of ignition so that when you turn the ket to on, the gauge comes on. Anchor the ground (-) wire to chassis ground. In other words, find a screw going through the metal body of the car under the carpet under the driver's side kick panel, and ground it there with a loop anchor connector. The signal wire connection has already been discussed above. I hope all this helps!!

[AustinJohn]

LinuxRacr--Very good explanation. Thanks! AustinJohn

[PaulMP3]

thanks, i will be needing this soon. i like that black kart boy knob it look nice.

[mp3moose]

Thanks Linux. Just what we needed.
Cheers,
Moose

[Traveler]

Just a quick word of advice. The 1st O2 sensor is the one that "hunts" for mixture. You'll get a much steadier signal from the rear one once it warms up. If you watch the voltage from the front O2, you'll notice that it's constantly cycling between about .25V and .75V. This is because the computer is adjusting the mixture constantly to find the best settings. The rear (2nd) O2 will give you a much steadier signal, but it also reflects the after cat mixture which means it will be reading somewhat leaner than what your engine is actually running. The only way to get around this is to install a seperate O2 sensor that is only hooked to a gauge.

[igdrasil]

Im installing the Greddy A/F Warning Meter 60mm i got from spool-turbo.
It comes with its own sensor andit will be placed on the stock sensor is now.

-edit-

Installed, working, but CEL activated.

[Logan]

I wanted to check the wire going to my ECU before splicing in. Using my voltmeter, this wire (#60, pink w blue) reads 0V all the time.
Yes, the car was running.
Help?

[igdrasil]

That one is the one to tap, thats the signal wire

[trekv2]

i cant find a good place to hook up the 12v switched + wire?
any help there the alarm is the closest place but when i turn my car it willnot read!

[dominoy2k1]

yup spliced into wire 60....no readings...damnit....guess imma use the one under the hood....

[LinuxRacr]

Originally posted by dominoy2k1
yup spliced into wire 60....no readings...damnit....guess imma use the one under the hood....

It's the same wire. Sure you have ground hooked up good, and that there is a good, solid connection to wire #60?

[dominoy2k1]

yup even soldered(sp?) it on, just to make sure....i guess i will double check, human error is a bitch....yeah ground is good because gauge turned on but no readings...maybe defective gauge?

[dominoy2k1]

it works now had to hook it up under the hood...anyways it is wierd because it is the same wire...anyways had a question....when you floorit, its supposed to run rich right? how about when you release gas pedal...lean?

ps: do wear gloves i got cut when removing ecu.....

[igdrasil]

Originally posted by dominoy2k1
it works now had to hook it up under the hood...anyways it is wierd because it is the same wire...anyways had a question....when you floorit, its supposed to run rich right? how about when you release gas pedal...lean?

ps: do wear gloves i got cut when removing ecu.....

Yes...it is supposed to go rich as boost builds up. But if you release the gas pedal, it will go all the way lean until idling, will go rich until it normalizes the idle.

No boost-no rich necesary

So...its working!

Now I have a problem with mine, it started to happen today, it will go rich on partial throttle when boostin, which is ok, but not on WOT....it will go all the way lean if I floor it.

[LinuxRacr]

Originally posted by dominoy2k1
..............

ps: do wear gloves i got cut when removing ecu.....

Please see above warning in RED

[dominoy2k1]

i know but beigned a guy i was thinking all macho and stuff......

[NRRfrogmanP5]

very helpful...had no clue where to start.went on the forum and there it was!

[JustMe]

Hmm ... I have 2 white, one black and one grey wires coming from 1st O2 sensor ... is the grey one a signal?

[igdrasil]

no, look farther on the wires, pink/blue wire.

[KzA]

If i plan on getting a turbo, would it be a problem if I installed this gauge before the turbo? You just plug the sensor into the new bung, right? I wouldnt have to run it all over again right?

[igdrasil]

Originally posted by KzA
If i plan on getting a turbo, would it be a problem if I installed this gauge before the turbo? You just plug the sensor into the new bung, right? I wouldnt have to run it all over again right?

Terry said it would be a problem with heat shortening the life of the O2 sensor, plus, when they are overheated, they will give innacurate readings.
I already tested this when I was N/A. Plugged the New O2 sensor in the manifold and it overheats @ high loads, 4th or 5th gear.

[Steve89GTA]

igdrasil
If you're running lean at wot under boost - you're going to fry your motor. Leaning the mixture up top helps with power output but will lead to fried pistons as a lean mixture up top also increases temperatures in the combustion chamber - which lead to cracked heads, etc.

I'd recheck your fuel delivery setup and ensure that you're getting the correct pressure at WOT.

[DaKidd]

I had my guages installed yesterday. the a/f guage didnt work, so I checked it once I got home. the installer hooked it up to the wrong wire (the orange one). so I took it back to him today and had him put it on the blue/pink wire. it then worked fine for about 1/2 an hour then just went out again... well not completely out, it just reads in the lowest lean digit at WOT, then goes blank at all other times... what happend here? did he fry the guage or the o2 sensor? did it over heat the sensor??? I dunno... need some help here!

[LinuxRacr]

I remember my Autometer A/F gauge used to flake out on me all the time like that. I dunno.

[LinuxRacr]

My Autometer A/F gauge used to flake out like that all the time. I dunno what's up. Probably a bad ground contact or something.

[BLUESTREAK]

hey linux empty ur pm box... heres what i tryed sending you




k need ur help here bud... i am buying an fs-ze and i want to drop it in my 2000 protege ( sick of losing races)... so anyway.. what did u do.... like did u use ur stock ecu or get urs reprogrammed... and what type of gains did u recieve... did u dyno the car, race on the 1/4 mile track , and so forth.... any tips i should know? by the way i am getting it for 1000 plus shipping canadian.. so its an offer i am not refusing

[dominoy2k1]

i think you need the ecu also to get the hp, without it, it is worthless from what i remember....i could be wrong though...

[jcywong]

sorry may i ask what is the point in installing the air/fuel ratio guage? is that we can adjust the air/fuel ratio setting??

[02.5 P5]

does the 12v source need to be a constant source, or can you hook it up to just come on with the parking lights? in other words, does the guage need power all the time to work?

[dominoy2k1]

all the time when the car is on, yeah.

[02.5 P5]

cool,thanks

[02.5 P5]

where should i tap in for the constant 12v?

[YellowMP5]

I had my guages installed yesterday. the a/f guage didnt work, so I checked it once I got home. the installer hooked it up to the wrong wire (the orange one). so I took it back to him today and had him put it on the blue/pink wire. it then worked fine for about 1/2 an hour then just went out again... well not completely out, it just reads in the lowest lean digit at WOT, then goes blank at all other times... what happend here? did he fry the guage or the o2 sensor? did it over heat the sensor??? I dunno... need some help here!
i connected my autometer gauge's violet wire to the orange one too. i contacted autometer and they said it should be connected to the white wire on the o3 sensor but after the connector. the connector connects orange wire and white wire together. the gauge read lean, all the way to the left and would rarely spike. but gauges signal wire should be connected to the pink/blue wire after the connector, right? damn autometer, i am going to sue them.:mad: sorry to bring the thread back from the grave. btw, i have 50k miles on my car, should i change my o2 sensor for a better/proper signal to the pcm?

[orng1]

where should i tap in for the constant 12v?
try the fuse box, it has 12v

[pdhaudio83]

finally figured it out. thanks to the genious (SERIOUS! :) ) who said it was wrapped up in grey sleeve. WERD.

[LapisBlueProteg]

ok maybe just me but i hooked it up to pink and blue wire!
the digi jumps back and forth like mad!
autometer pro comp series!
any ideas or is this normal drives me nuts and is the autometer supposed to have a backlight?

[LinuxRacr]

What do you mean?

[benbike]

ok maybe just me but i hooked it up to pink and blue wire!
the digi jumps back and forth like mad!
autometer pro comp series!
any ideas or is this normal drives me nuts and is the autometer supposed to have a backlight?Yes it's normal and there's no backlight on the Autometer A/F gauge

[LinuxRacr]

If you are talking about how the gauge scans back and forth, then yes that is normal. The ECU is constantly adjusting the A/F ratio back and forth around 14.7.

[LapisBlueProteg]

got it some times it stays in 1 spot! odd gauge!

[mattybo]

what are the pros/cons of connecting the wire at the 1st o2 sensor vs. ecu?

Why would you ever run wire through your firewall and do all that extra work if you can simply tap into the wire running from the ecu? There must be a reason?

[LapisBlueProteg]

i think u get a better reading at the o2 and it took like 2 mins for the fire wall!

[Notorious]

the reading at the 02 sensor and the ecu are the same. Since that wire connects to the ecu, but like chris said, takes less time to run it through the firewall than to pull apart the interior and get to the ecu.

[Mark94]

Anyone figure out why a few people didn't get any readings with the gauge connected to the ECU?

I'm planning on going this route but want to make sure it works before I do it.

Thanks!

Mark

[LapisBlueProteg]

now i have a check eng light on not sure if its because of the a/f gauge not getting a reading!
any help! plzzzzzzzzzzz

[benbike]

now i have a check eng light on not sure if its because of the a/f gauge not getting a reading!
any help! plzzzzzzzzzzz
It happened to me too, disconect the battery (negative)..It worked for me

[mazdaspeed75]

I installed a venom air fuel gauge and it show rich @ 9psi all the way to redline in every gear . How accurate are they Are they accurate enough to up the boost alittle more with the readings i got . Just wanted to get whta you guys thought i will eventally get a wbo2 but i trade my old whey protein for this meter so i had no out of pockets exspence and the meter was like 90.00 it was brand new . Any info about accuracy would be apprecaited

[pdhaudio83]

no, they arent very accurate. you'd want a wideband O2 sensor.

[mazdaspeed75]

So dont trust it at all . Yea i wnat the aem wbo2 . You may have some business down the road I wnat to build the motor down the road .

[celdridge]

where should i tap in for the constant 12v?


Cigarette lighter is perfect.

[noclue119]

How many wires do u guys have


I have
Red - 12 v ignation - i guess the cigeratte lighter?
White - Dash lighting - so the dimmer blue/white?
black - ground - green/black wire on the dimmer
violet - #60 on ECU right

Does that sound right u guys?


Also can i use the same 12v ignation on the cigeratte lighter to power all my gauges? Boost, oil pressure and A/F?

[Matthew]

shouldnt be a problem. mine are hooked up directly under the steering column or to the radio power.

[celdridge]

How many wires do u guys have


I have
Red - 12 v ignation - i guess the cigeratte lighter?
White - Dash lighting - so the dimmer blue/white?
black - ground - green/black wire on the dimmer
violet - #60 on ECU right

Does that sound right u guys?


Also can i use the same 12v ignation on the cigeratte lighter to power all my gauges? Boost, oil pressure and A/F?


You will have 4 wires if you have the C2 Series ... like i do. Most of the others will only have 3 because they dont have a wire for illumination. All your information above is correct. Make sure you fuse your 12v wires ... just in case.

[noclue119]

You will have 4 wires if you have the C2 Series ... like i do. Most of the others will only have 3 because they dont have a wire for illumination. All your information above is correct. Make sure you fuse your 12v wires ... just in case.ya i was goign to to into the cigerrtte lighter for the 12 v constant on the a/f

then i was going to wire the Dash lighting + 2 additional gauge lights to the dimmer's blue/white and green/black

[SP5]

shouldnt be a problem. mine are hooked up directly under the steering column or to the radio power.
So let me get this straight. Once I've hooked up the standard wires, i.e., Red - 12 v ignition, White - Dash lighting, and Black - ground. The only other connection is Violet - by tapping the correct O2 sensor wire near manifold (assuming I don't want to connect it to the ECU wire) and running it through the firewall, correct?

SP5

[celdridge]

So let me get this straight. Once I've hooked up the standard wires, i.e., Red - 12 v ignition, White - Dash lighting, and Black - ground. The only other connection is Violet - by tapping the correct O2 sensor wire near manifold (assuming I don't want to connect it to the ECU wire) and running it through the firewall, correct?

SP5


Yep .. thats it.

[SP5]

So what's the best place to route the wires so that they are out of the way and not visible? Where do you route the wires from the gauge - down the pillar and then where?

SP5

[DrummerJim50]

LinuxRacr: can you repost the 1st picture that shows the ECU - it doesn't show up.

[LinuxRacr]

That picture was hosted by flyinprotege.com which no longer exists. Time to find another picture.

[SP5]

I have a P5 and I'm going to install an A/F Ratio Defi gauge. These are the wires that it came with and the connections I plan to make based on the how-to's I found:

White (Illumination) - Blue/White wire on dimmer switch
Black (Ground) - Green/Black wire on dimmer switch
Orange (12V Ignition) - Red/Black wire off ignition wires?
Red (12V Battery) - Positive Battery or Cigarette Lighter?
Pink (O2 Sensor) - Pink/Blue wire on underhood O2 connector

Are these connections correct? Are there better/easier alternative connections for any of them, specifically the Orange and Red wires?

SP5
(group)

[SP5]

Anyone??

[ums]

I have the blue wire on the guage going to the pink and blue wire on the ECU and now i need to find and good ground and good power source. Any ideas?

[ums]

I just finished the install. I put the red wire to the oraange ignition wire at the same place I used for the Turbo Timer. I also used the ground that is on the pillar. Didn't work right. So I pulled it of the ECU and whent to the front O2 and took it off the pink w/ blue strip wire there and it works fine. The wire isnt the same. I changes colors somewhere. I have no idea what that ECU wire goes to.

[poboxjosh]

Is there a good place to go through the firewall?

[Nutari]

bump for picture updates please!

Just got my gauges from corwin (THANKS CORWIN!!!)

Need know where to tap for a boost gauge..

and the ecu pic would be helpfull too. I might just work up the nerve and go out right now and do it myself.. and I'll take pics.

[Brian MP5T]

The A/F wire is easy to identify because at the ECU it's the covered with foil. The Plate that holds the ECU is very sharp...

Boost is taken on the line that runs form top of the intake manifold over to the passenger side (Curise Control Module).

Cut and tap a "T" fiting in.

[Nutari]

Thank you. T fitting? Where would I find that? Any auto parts store?

Plastic? Brass?

[Brian MP5T]

Plastic, It's for a Vac Line...

http://www.beveragefactory.com/draftbeer/hose-fittings/pix/th_wd.gif

To hook it into your Autometer, use the supplied brass fitting and the teflon line. Hook a standard vacume line over the teflon line and to the "Tee"

[Nutari]

Plastic, It's for a Vac Line...

http://www.beveragefactory.com/draftbeer/hose-fittings/pix/th_wd.gif

To hook it into your Autometer, use the supplied brass fitting and the teflon line. Hook a standard vacume line over the teflon line and to the "Tee"
Didnt come with one.. bought mine from Corwin. Pretty much just gauges, metal gauge holder thing.. and wires wrapped around it all. No vac lines or 'T' fittings. Guess I cant install it now. Gonna have to go shopping tomorrow.

[nadim]

Hey how are ya man well i want to install an air/fuel ratio gauge i tried to find the o2 sensor but it seems that my car doesn't havethem cause here in santo domingo there is no pollution restrict so i just have to go to the ecu i got some pics of it and tried the pink bule wirte one but nothing and also how to count the pin so u can see the pin #60 thanks.
At the request of many members, here is a little how-to on installing the A/F Ratio Gauge.

Helpful Items for install:

*Protege Wireing Diagram book for you year
*10 mm deep socket with extentions
*3M Electrical splices AWG 14-18(no ghetto wire twisting or you will regret it later!)
*Assorted Bute Connectors AWG 14-18
*Loop Anchor connector AWG 14-18

1. There are 2 spots where you can splice into the signal wire for the 1st O2 sensor:
-At the 1st O2 connector Harness under the hood
-At the 1st O2 connector Harness at the ECU

Pick a place. If you splice in at the ECU, the wire you need is coming from ECU PIN # 60. This is the signal wire. It is a Pink Wire with a Blue stripe (P/L).
The ECU is located on the passengerside, under the carpet. You will need to remove the doorsill, and the passengerside kick pannel to pull back the carpet. The ECU aluminum cover plate will then be visible. This is where you will need the 10mm socket, as there are 4 nuts holding it in place. After removing the nuts, you will need to flip the metal cover over. I advise use of leather gloves, or a cloth to handle the edges of the cover. THEY WILL CUT YOU!! After fliping over the cover, the ECU will be visible. The ECU harness connector has a bolt holding it to the ECU. Time for the 10mm socket again. Looking at the top of the ECU harness connector, you can see that the pin holes are numbered. Find wire number 60 and splice in there.

Here is a picture of the location of the ECU:
http://www.gvii.net/dlralt/protege/installation_photos/082602_ecu.jpg

Here are some pictures of where I spliced into my 1st O2 sensor to give you an Idea of the underhood location:
http://www.mazdamp3.com/members/LinuxRacr/1st%20o2%20sensor.jpg
http://www.mazdamp3.com/members/LinuxRacr/blue-pink%20on%20harness%20tapped.jpg
And here is the entire album:
http://photos.yahoo.com/bc/linuxracr/lst?.dir=/A-Pillar+Shots&.view=t

To hook to the gauge itself, you will have to route through the firewall on the driver's side.

The A/F gauge itself usually has a positive (+) 12v wire, a ground (-), and the signal wire (that goes to pin #60). Find a suitable +12v source of ignition so that when you turn the ket to on, the gauge comes on. Anchor the ground (-) wire to chassis ground. In other words, find a screw going through the metal body of the car under the carpet under the driver's side kick panel, and ground it there with a loop anchor connector. The signal wire connection has already been discussed above. I hope all this helps!!

[Brian MP5T]

Hey how are ya man well i want to install an air/fuel ratio gauge i tried to find the o2 sensor but it seems that my car doesn't havethem cause here in santo domingo there is no pollution restrict so i just have to go to the ecu i got some pics of it and tried the pink bule wirte one but nothing and also how to count the pin so u can see the pin #60 thanks.

Ummm, the O2 has nothing to do with polution control. Your Car Has 2 Of them for sure...

[nadim]

hey well look her are some pics of my engine bay and under it to see that i don't have any o2 sensor and no catalyst for sure.
http://www.msprotege.com/forum/showthread.php?p=1659302#post1659302
i\am tired for looking for it an nothing.
Ummm, the O2 has nothing to do with polution control. Your Car Has 2 Of them for sure...

[Brian MP5T]

You have the 1.6L, It's in the Tech manual as being on before your First cat on the Mani.

[dominoy2k1]

dude i think he is refering to emissions. maybe their cars do not use o2 sensors. its weird though

[nadim]

dude i think he is refering to emissions. maybe their cars do not use o2 sensors. its weird though
from where to begin counting thanks!!!! or how to know which is pin #60

[poboxjosh]

The blue/pink wire is real easy to get to on the o2 sensor. I would assume the wire is blue/pink on the ecu also.

[nadim]

The blue/pink wire is real easy to get to on the o2 sensor. I would assume the wire is blue/pink on the ecu also.
well i will have to try it but i was afraid to do something wrong i was thinking to try each wire in the ecu to see but would that affect the gauge or something?!?!?

[dominoy2k1]

it should show numbers on the ends of the wiring harness. . it should be like 1-40,41-80/81-120. something like that. check the picture.

[Brian MP5T]

60 Has Foil on the wire...

[LinuxRacr]

60 Has Foil on the wire...

Mine had more of a rubber cover with a single strand of shielding wire going thru it.

[Rainman]

Lurnin' is guud! Greatly appreciated.

R

[nadim]

well as u haave seem in the pics i don't have any wire with foil going to my ecu so (shrug) duno what to do and ther is no o2 sensor for sure the problem is that my car in no american version it is a japanes one so would that be de problem??? but it doesn't have any o2 sensor for sure i looked and nothing,i also wanna know the air fuel ratio gauge how does it light up starting from one side green light right? and when the car is just on the first green light stays lighted just one led or should it turn on more leds?!?!??!?!


60 Has Foil on the wire...

[Brian MP5T]

Mine had more of a rubber cover with a single strand of shielding wire going thru it.

Ah, But it did have foil on it... (usa)

[nadim]

well i connected to where the pics show and it is working great !!!
it should show numbers on the ends of the wiring harness. . it should be like 1-40,41-80/81-120. something like that. check the picture.

[stevesMSP]

mine just jumps from side to side very distracting, is this right. just want to change gauge to water temp or something

[dinux]

old post but here is some more information. i know a lot of people had to ask where to get their constant 12v source from when the car is turned on. the best place to get constant 12v source from only when the car is on is from the ignition wire in the ignition harness. if anyone wants wire colors, check below. also, i have not done this yet though i plan on it and was wondering if anyone knows a good pillar pod that has spots for two gauges. i am not a fan of the autometer ones as they are black and just cover the existing a-pillar plastic it looks likes. i want a complete replacement. thanks in advance

protege 5 wiring
- ignition - 12v + when vehicle is on - blue

[Brian MP5T]

titanium RX-8 ../vbb225/images/smilies/smileyr.gif

[dinux]

I installed mine today! : ) It does jump until the car warms up and then gets used to the ECU adjusting, then it kind of calms down.

Only complaint: No backlight! Oh well. Maybe I will take it apart sometime when I get really bored and attempt to add one! : ) Hee hee

[Brian MP5T]

Dont bother. It on't look good, I tried and failed to make a backlight that I liked.

[LinuxRacr]

Ah, But it did have foil on it... (usa)

I don't recall seeing foil.

[Mazdaspeed989]

I installed my A/F guage today. I spliced into the Pink wire w/ blue stripe at the first O2 sensor and my guage jumps back and forth when i'm at idle. I just read into the thread about splicing into the second O2 sensor for a steadier reading so I will be doing that tomorrow. Hopefully it will keep it from jumping around so much. Also have an DSM's AFC on order so we'll see if that calms it down a bit too.

[poboxjosh]

I installed my A/F guage today. I spliced into the Pink wire w/ blue stripe at the first O2 sensor and my guage jumps back and forth when i'm at idle. I just read into the thread about splicing into the second O2 sensor for a steadier reading so I will be doing that tomorrow. Hopefully it will keep it from jumping around so much. Also have an DSM's AFC on order so we'll see if that calms it down a bit too.


Its supposed to do what it is doing. It is a narrow band that is the best place to put it. It doesnt give good readings. Just keep it there and save the trouble.

[FL_PR5]

alright i just got mine in and i want to clear this up before i go and put it in. I got 3 wires; red, black, and purple. tell me if i got this right: red goes to 12v input, black to negative ground, and purple to sender? i'm going to tap into the pink with blue stripe wire from the 1st O2 sensor. if someone could clarrify it that would be great. thanks in advance.

edit* i also hear all these suggestions for a good ignition source for the 12v input. i planned on tapping into my cigarette lighter with my water temp gauge but is there any closer wires in all those harnesses in the drivers foot well?

[FL_PR5]

bump.

[evilmonkeyMSP]

the explanation of the wire colors & what they are for is correct :D

[FL_PR5]

ok, graci.

[evilmonkeyMSP]

you actually would want the 12v to be a 12v ignition source

[FL_PR5]

so the cigarette lighter wouldn't work? i dont know what proper ignition cables are the right ones to tap into below the steering wheel. i'm also going to hook up the water temp gauge too, so is there a wire that could do both of those?

[evilmonkeyMSP]

alright, pm me w/ your email address & I'll send you the instructions for installing a turbo timer. This has the instructions of how to get to & which wire is the one you would want. Once you find that you would just basically tap both wires into the same line.

[FL_PR5]

alright. and which two both wires would that be?

[evilmonkeyMSP]

I meant tap both power wires for your 2 gauges you are installing into this one 12v line...



alright. and which two both wires would that be?

[FL_PR5]

anyone else, i found out i dont have a white wire harness with all the directed wires. i just have straight through wires on it that i guess someone else tapped with other items since they are bandaged with wires and electrical tape.

[Brian MP5T]

I don't recall seeing foil.

It is normally a shielded wire...

[FL_PR5]

there is no foil or anything. just electrical tape on a few. i'll take a pic and let you see.

http://i5.photobucket.com/albums/y154/Lockrdge/000_3594.jpg

http://i5.photobucket.com/albums/y154/Lockrdge/000_3592.jpg

[FL_PR5]

there you go. i guess where the yellow connectors are and the tape is that is where the harness should be?

[Brian MP5T]

Dude, The Foil is on the wire at the ECU, under the feet of the passenger...

[LinuxRacr]

It is normally a shielded wire...

This is true. I have seen it now.

[Brian MP5T]

Finally! Woot Woot!

[FL_PR5]

well damn brian sorry. i'm new to this shit. and i was informed of being able to tap into the ignition wires under the driver side, that is what i was talking about and referring to.

http://church56.tripod.com/ignition_harness1.jpg

thats what i was going for. plus i dont' know that much about the ECU much less where it's located. that's why i'm asking.

[carbonkid]

so can someone definitively state that there is a difference with any A/F Ratio meter if installed at front vs rear O2 sensor? The rear one changes less, correct?

[Moonman8]

so can someone definitively state that there is a difference with any A/F Ratio meter if installed at front vs rear O2 sensor? The rear one changes less, correct?

bump for an answer to this question.

[jamesk]

red wire should go to the ignition harness. anything else, the airfuel ratio guage would stay on all the time. the gauge will only stay on when you turn the key to on. thats what you want. the wire in the igniton wire is about a 16 gauge wire and the color is black with a white strip. ill try to get pics.

i grounded the black wire to one of the nuts holding down the ecu plate. thats easy because you do not have to make a new hole.

for the purple wire. i took out the ecu and i was trying to find pink with blue stripe. no luck, so i took the black plastic piece off of the ecu harness and it exposes all the wires conected to the grey piece. every wire is numbered and it is very easy to find number 60.

i did not have any butt connectors, so i just twisted the wires together and put electrical tape around. it seems to work fine, it should not be a problem.
if it comes out to be a problem, ill put butt connectors in.

[viper00]

hey guys on JAN 27 i whent to my friends shop to install my gauges what a mess he did he got all the lights on the gauge to work and my VOLT to work and my AIR/FUEL he hooked it up but i told him it dosent look right ( it has 1 green light and 2 yellows ) and just stays like that dosent move side to side he cut into alll my wires and couldnt get it can anyone help me b/c i'm driveing and it looks stupid thoses lights not moveing i have a mazda 3 touring edition 2.3L thanx alot

[jamesk]

check the signal wire. seems like it is getting a 12v source fine but not getting any readings. either that or i think guage is broken.

[viper00]

check the signal wire. seems like it is getting a 12v source fine but not getting any readings. either that or i think guage is broken.




hey i tryed all my wires all 4 wires i get 1 green and the 5th wire i get 2 yellows and 1 green could it be that it dosent work on mazda 3 cars

[viper00]

hey i tryed all my wires all 4 wires i get 1 green and the 5th wire i get 2 yellows and 1 green could it be that it dosent work on mazda 3 cars

thanx alot jamesk i got it to work my car has 2 O2 and it was on the wrong one

[mazdaspeed777]

Subbin, Just got a AF gauge and have never installed any gauges before.

[bigcc63]

Where do ya'll suggest the +12v source of ignition to go to............

[djarkitek]

got mine working, woot!

[Myspeed12]

i installed mine today but the air fuel only has one green light on the rich and i connected it to the first 02 sensor in the engine with the pink and blue wire...whats wrong?

[Myspeed12]

bump help please

[Brian MP5T]

i installed mine today but the air fuel only has one green light on the rich and i connected it to the first 02 sensor in the engine with the pink and blue wire...whats wrong?

Are you waiting for it to warm up. It will only work after a minute or so of driving..

[Myspeed12]

i did wait for it to warm up....and i drove it today and no improvement this sucks i even researched it on the autometer website

[urbanbiker]

Hey,

Just installed my air/fuel guage tonight along with some others. It is an autometer ultra lite 3 wire hookup

Red - +12v Keyed on
Black - Ground
Purple - Pink w/ Blue stripe right at ECU (see below)

I cut the wire in half, added my lead wire onto the firewall side and soldered those two together. Then I tinned the ECU side and then soldered the two halfs together. Covered it with a sleeve of heat shrink and I was done.

The gauge powers up with the car, it will float around stoich in the yellow range for a little bit and then begin to swing Rich to Lean after the sensor warms up. Everything is working perfect! Step on the gas and it will go rich, let off and it will go lean.

It is all about a good solid connection.

If you are experiencing a steady single green light it means you are not getting a signal to the purple wire. When I powered my gauge on without the purple connected that is what I got.

Best of luck to anyone else who tires, it is really a simple setup

Matt

[Jakez801]

Does anybody install A/F Gauge in Mazdaspeed3, i need some instructions, please..!(confused)

[Jakez801]

It have 5-wires, yellow, blue, white, black and grey..!

Where to cut/tap signal wire?

[njaremka]

sounds like the speed3 has a wideband sensor. you might need a different gauge to read its signals.

[Tzar177]

looking for a place to put the illumination wire other than to acc. i dnt want my gauge on when just listening to the radio

[redpr5]

for everybody trying to find a switched power for their gauges, check the fuse box. i dont know why everybodys trying to tap into the ignition wire. get a test light and find a fuse that only works with the car being on, such as the fuse for your gauge cluster (which is where i have my radar detector hardwired with no problems) you could also use the room fuse (what my headunit is wired to, again no problems with switched power there)
also, its a lot simpler, pull out the fuse stick the wire in the power side of the fuses location, shove the fuse back in and look you have a fused, switched power.

[FL_PR5]

you're just too cool

[lpacalypse]

Just installed mine this way. way too easy but I'm trying to figure out how to tap into my light relay so when ever I do turn on my headlights, my guages will too.

for everybody trying to find a switched power for their gauges, check the fuse box. i dont know why everybodys trying to tap into the ignition wire. get a test light and find a fuse that only works with the car being on, such as the fuse for your gauge cluster (which is where i have my radar detector hardwired with no problems) you could also use the room fuse (what my headunit is wired to, again no problems with switched power there)
also, its a lot simpler, pull out the fuse stick the wire in the power side of the fuses location, shove the fuse back in and look you have a fused, switched power.

[mazdaspeeeeed]

i just installed a prosport a/f gauge and it sits at all the way lean and doesnt budge. before I connected the green wire to slot #60 it used to sit at all the way rich... everything else works fine with it as far as lights and opening ceremony....

any suggestions?

[mazdaspeed777]

i just installed a prosport a/f gauge and it sits at all the way lean and doesnt budge. before I connected the green wire to slot #60 it used to sit at all the way rich... everything else works fine with it as far as lights and opening ceremony....

any suggestions?

You might want to try splicing into the air sensor in your exhaust manifold instead of pin #60. I spliced my air/fuel gauge into pin #60 and my gauge does not work at all(could be other problems), I am going to try and wire it that way my self an see if it works better.

[mazdaspeeeeed]

You might want to try splicing into the air sensor in your exhaust manifold instead of pin #60. I spliced my air/fuel gauge into pin #60 and my gauge does not work at all(could be other problems), I am going to try and wire it that way my self an see if it works better.
i will mess around with it this weekend and let ya know how it goes and what i did. I was told by someone that if you touch the end of the sensor wire that the needle should jump around. makes for a good test to see if the gauge is good.

[DreMazdaProtege]

How do i install a TACHOMETER?

I been re-searching and it's V/W on a 2003 Mazda Protege.

Since I don't have a mazda protege manual I don't know where pin 48.

Any one can help me please. Pictures will help alot

[LinuxRacr]

Need to start a new thread for that (if you haven't already). This one is not for a tach.

[jonridinhi]

Thanks for the great how to. Everything went perfectly and i did not have to spend an hour in the manual trying to figure this all out. Thanks again.

Some more info if you got the OBX 4-1 header...
I tried the first and the second o2's

First one bounces back and forth except when it is lean at a low rpm and WOT it is rich. In between it bounces a little but not too bad.

Second one with the fix (to eliminate the cell) it just reads lean but then you take out the fix and install it normally you get the cell.

So I just stuck with the first one until i buy a wideband and then i will install an new bung.

[HKPRO5]

I got everything hooked up but nothing is on???

[jonridinhi]

I got everything hooked up but nothing is on???

Where did you get your 12v from? It is either that or your ground most likley not being fully grounded. If you got a test metter hook it up and se what voltage you get on your hot wire and then you could check your resistance and see how good the ground is. Just a thought.

[HKPRO5]

Thanks! ill check it out tomorrow. Also im getting a weird throttle response now. Its kinda like i have turbo... without the power. ill be WOT and the car would gradually move up in rpm. then all of a sudden it would be normal to redline. and im not getting any C.E.Ls. its weird.

[sub 6]

Any aware of these being sold for right hand drive MPS motors?
Also anyone fitted the CP-e and Prosport Gauge Package mount onto their motor?

[HKPRO5]

OK so the gauge works now but....its just showing red the bottom light is constant and the second light is flickering. Right now i have the 12v hooked straight to the battery and the ground hooked to a wire connected to the battery. and the purple wire is on the first O2 sensor spliced with the pink and blue wire. Any ideas? And yes i did wait for it to warm up.

Thanks!

[808MP5]

hmmm.... does it move at all when you tap on the throttle?
i know EVADE (effren) hooked this same gauge in his car... he might have some knowledge to share with you

[HKPRO5]

Nothing happens when I press on throttle. I also have very poor idle when I'm sitting at a light. (less than 500 rpm)

[Nutari]

OK so the gauge works now but....its just showing red the bottom light is constant and the second light is flickering. Right now i have the 12v hooked straight to the battery and the ground hooked to a wire connected to the battery. and the purple wire is on the first O2 sensor spliced with the pink and blue wire. Any ideas? And yes i did wait for it to warm up.

Thanks!

I used this guide and went straight to the ECU pin out. Worked fine. Pretty worthless though. Narrowband AF gauges are just a light show. Not sure why they still sell these.

[bazooka joe]

Nothing happens when I press on throttle. I also have very poor idle when I'm sitting at a light. (less than 500 rpm)
you have the sensor in your exhaust?

[HKPRO5]

Ya it's at the first o2 sensor

[HKPRO5]

Bump?

[bazooka joe]

it could be too close there? the best location is down stream a bit

[HKPRO5]

Hmm ill try changing it to the ecu side when i get off of work.

Thanks!

[lanny709]

i did wait for it to warm up....and i drove it today and no improvement this sucks i even researched it on the autometer website


having the same problem here. all is well and hooked into first O2 and I'm reading the last green over on rich? wtf is that? makes no sense haha

HELPPPPPPPPPPPPPPPPPPPP!!!!!

[HKPRO5]

I noticed that if you solder the connections on the O2 side. It makes it 100X better.

[lanny709]

I noticed that if you solder the connections on the O2 side. It makes it 100X better.

but I'm not getting any response from the gauge even after warming.. it's always rich :(

[apop069]

can some one tell me the wireing diagram for the front oxygen senor.

[justanothermp5]

but I'm not getting any response from the gauge even after warming.. it's always rich :(

check your ground

[blackdragon11]

Ive got the ProSport A/F gauge, is this stuff right:

red(12v accessory power)- Positive Battery terminal
black(ground)- and metal ground
White(accessory power on)- black/whitestrip ignition wire
Orange(headlight switch)- Blue/White dimmer switch wire
Green- Pin 60 on ecu

Does all this sound right?

also, i bought a bosch wideband o2 sensor, can i just put it in place of one of my other o2 sensors, or do i have to weld a new bung in? once its in, where would i splice my green wire into that?

[njaremka]

Ive got the ProSport A/F gauge, is this stuff right:

red(12v accessory power)- Positive Battery terminal
black(ground)- and metal ground
White(accessory power on)- black/whitestrip ignition wire
Orange(headlight switch)- Blue/White dimmer switch wire
Green- Pin 60 on ecu

Does all this sound right?

also, i bought a bosch wideband o2 sensor, can i just put it in place of one of my other o2 sensors, or do i have to weld a new bung in? once its in, where would i splice my green wire into that?

sorry, you cant just replace a narrow band with a wideband without a controller. a wide band output is 0-5volt, while a narrow band output is 0-1volt. your ecu will flip out or fry if you feed it a wideband output.

[blackdragon11]

sorry, you cant just replace a narrow band with a wideband without a controller. a wide band output is 0-5volt, while a narrow band output is 0-1volt. your ecu will flip out or fry if you feed it a wideband output.

ok, thanks!

[blackdragon11]

How come there are two Black/Whitestrip ignition wires? which one do I tap into?? Help asap, im trying to get this done!

[blackdragon11]

anything? ive wired everything up as i said 3 posts up, except for the white wires to the ignition since im not sure which ignition wire since there are two. also, they are on when the car isnt, is that because the ignition wire is not hooked up yet? i disconnected the power wire from the battery until i figure out the ignition wire situation.

[blackdragon11]

Anyone know why my A/F gauge just bounces back and forth?

[njaremka]

Anyone know why my A/F gauge just bounces back and forth?

if its the stock narrow band, thats what they do.