im switching my car over to obd1 and on the 4 wire o2 there is a green,white and two black wires what goes where

 

what are the color of the wires you are connecting to? is it OBD0 now? Whats the car

 

if he has a REX then I would figure

and I am also doing this how can I do this where or how to wire this

thank you

 

Two white wires are heater power and heater ground. doens't matter which way you connect them. Green wire is 02 sensor ground, and black wire is 02 sensor signal.

 

so i need to run more wires to the ecu or what?????

 

green wire goes to any green/wht wire on your harness other than map.. so tps, watertemp etc.. or **T** to D22 on ecu.. (make sure it's still connected to the harness from the ecu.. but splice your wire into it as well)

white wire goes to your old single wire o2 wire.. or D14 on ecu

one black goes to yel/blk injector wire.. or **T** to A25 on ecu.. (make sure it's still connected to the harness from the ecu.. but splice your wire into it as well)

the other black goes to A6 on the ecu.. you may need to add a pin.. but this is a must for 4wire o2

the black wires are supposedly indistinguishable from eachother.. just needs to complete the circuit either way, so doesnt matter which one goes to which.. just pick one

--truent

 

thanks guys

will do soon to my obd 0 bucket

got left over stuff if interested

anyone???

good info

thanks again guys

 

the car is obd0 crx and i have the conversion harness and new ecu..my o2 sensor wires are black black white and green so what goes to where..

 

scroll up bro

I got it already

"oh crap"

hooked it up