hey,
having a lil problem, i have one wire to hook up on my a/f gauge.
it needs to go to the o2 signal wire that goes to the pcm. i lost my wiring diagram so does anyone know what color i need to hook it up to..
thanks
josh

 

Purple wire. Look under hood and find the wiring harness that goes to the O2 sensor(easiest is on pasenger side) Its purple. Follow it back to the midway point . I tapped into it . Very easy.
Driver side is purple and white .

 

Both O2 sensor signal wires go to Connector "C" (grey) on the PCM. Drivers side is purple/white wire to pin C20. Passenger side is purple wire to pin C8. Splice into both of them, run them to a single-pole/double-throw switch, and you will be able to select either sensor for the meter.