4 wire o2 install

[THEONE]

ok i have a 89 ef hatch it has been switched to obd1 and has a p28 ecu. i have 4 wires coming off my o2 sensor. 1 is white 1 is green 1 is black and 1 is yellow. where do they go? thanks for your help and i cant wait to get this over with....

[BlueHatch]

pm silversol he did the car that i just bought 0bd0 to obd1 with a p28 he can help you

[RandomGuy]

i thought two were black, one white and one either green or blue

[THEONE]

i thought two were black, one white and one either green or blue
maybe on the harness coming from the ecu on a obd1 car but on mine the o2 has the color stated above. and i need to run my own to the ecu 1 white 1 yellow 1 black 1 green that is what is coming from the o2 sensor

[scttydb411]

a6=o2 heater control
d14=o2 signal in

white is usually signal
green is probably o2 ground
black is probably o2 heater
yellow is probably +12v

don't quote me on this because they can all be different.

[THEONE]

oh god im lost, thanks will i mess anything up by trying diffrent wiring? i hav eit hooked up now and i still have a CEL for o2 i want this motor running right before the next step :)