I rewired my car to obd1, and I have the 4 wire O2 sensor that I have to install. I need to know which one of the 4 wires is the Heater wire, Signal wire, and what the other 2 do. I assume the 2 black ones are ground, and the gree one, and white one are the 2 signal wires. Any help would be appreciated. Thanks.


[Modified by enabi, 1:20 AM 6/7/2002]

 

None of you guys are willing to lend a helping hand here ? C'mon..

 

i can be a little bit of help.... white wire is the O2 signal wire. this is the one i tapped to read the A/F voltage signal off of (94 teg).

good luck
Todd