mustninty20

I just got done swapping a obd1 gsr into a 93 coupe. I used the wiring harness that was already on the swap but I don't think its a stock gsr harness. The O2 female sensor on the harness has 3 wires, yellow with a white strip, black with a white strip and green with a white strip and it looks like it accepts a plug with 4 prongs. If anybody knows what O2 I need to use with this plug LMK. Thanks

mustninty20

I just saw harness has a big block looking sensor that hangs right over the tranny. I believe this is the sensor that plugs into the top of an auto tranny, which this swap is not but I think this sensor may have come off an auto car. Just wanted to add that info just in case it helps.

Relic1

at the O2 plug you should have;
white/red - O2 signal (A14)
green/blue - ground(D22)
yellow/black - ignition power
orange/black - heater control(A6)


yellow/white
White/yellow
green/white
is the map sensor

without knowing what harness you have it's going to be very difficult to figure out where all the wires go. You're best bet is to pull out a meter and start tracing where they go manually.