I'm building my harness using this page,https://www.fiero.nl/forum/Forum2/HTML/098096.html and everything thing seems to be going good when I realized I messed up. My 4.9 has 2 o2 sensors and I've unplugged one from the computer plug and now don't know where to pit it back. Can someone help and then tell me of any other defferences I'm missing?

Bump bump

What year engine are you using? And what year computer? 92 and under years used one sensor so even if your engine uses two sensors, if your computer only needs to see one sensor..... you're all good!

I believe it's a 94

edit. misread.

anyways, did you cut the connector off or unpin the connector?

if you are using 94 I think tan and purple. 3E15-3F14 and 2B7-2A7. I think

[This message has been edited by gen2muchwork (edited 01-13-2015).]

Yes it is tan and purple but where does it pin into the computer?

quote Originally posted by racingfortheson: Yes it is tan and purple but where does it pin into the computer?

tan E15- purple F14 rear and purple B7- tan A7 front are the pins I think. double check
I suggest following only the pinouts for the computer you are using, be careful mickeys pinouts are for the early computer. you could confuse yourself easily, as they are similar.

If it was me (and I did have to make this decision once), Id wire it as mickeys and get an older number computer. Unless you need the 2 o2 sensors, or obd1.5 for some reason. but don't let me tell you what you should do

[This message has been edited by gen2muchwork (edited 01-13-2015).]

I don't have the budget to get a 2nd computer. I can't seem to find the pin out for the 95' (I just checked the Vin) DeVille anywhere.

Anyone have the pin out?

quote Originally posted by racingfortheson: Anyone have the pin out?

on the last page of mr mooses wiring thread, there is a nice schematic from 95 that reallybig put up that is helpful. also, if you look around you might be surprised how cheap you might find a computer. Mine was $35 or something less at the u pullit, with a bunch to choose from. that $35 might save you some confusion.