About to install a A/F guage, before i went cutting and splicing, wasnt sure which wire to tap. I assume one of the white wires is for what the o2 reads from the exhaust, I assume the other white wire is for something else, and black ground.

which white wire do I tap for an A/F signal?
Thanks.

 

None of the above. Without a WB02 all you're gonna get is a light show.



This belongs in the 4th gen forum BTW...

 

I know it will be a light show. The o2 sensors dont give anywhere near as acurate of a reading as it should. PLX M-300 is getting ordered next week but till then just wanted to hook up this guage, and will sell when I get my wideband.

This section has more people experience with wiring and which wires to tap than the 4th gen. I agree it should be there, but I feel a more acurate responce would have gotten from here.

 

Well i'll humor you then. I don't remember which wire was which color off the top of my head but i DO know that there are two heater wires and one signal wire. So just tap that one signal wire.

EDIT: Just read your post saying there are 2 white wires. Tap the black one...

 

thanks for the humor.

 

I edited my post for clarity. At least i helped...

 

I really do appreciate the help. And I do know the guage isnt acurate but its only temporary, plus need to make sure its funcational, take some pics then sell.

I searched the FSM and wasnt able to find it, and haynes didnt mention it either.

 

What guage do you have?

 

autometer sport compact guage.

After I purcahse found out it, doesnt work in conjuction with a wideband.

 

Weird, I only had one white wire but 2 red ones. Where are you tapping it at? by the ECU or O2 harness?

 

o2 harness

 

and it only has 3 wires?
hit me up on yahoo

 

dont have yahoo installed anymore just aol.

 

tap the rear O2 man

 

you werent kidding. . . quite a show.

 

 

Why are you going through the effort to install a useless gauge only to remove it in a week when you buy a wideband? Just curious, seems like a waste of time...

 

making sure its functional, take some pics, and then sell. Had I known it wouldnt work in conjuction with a wideband in the first place, I wouldnt have purchased it.