i need help on wiring in a 4-wire o2 on my 1991 crx dx with a d16z6. i got a bosch 4 wire 02 and the colors on the sensor are white, white, black and black. i searched but all the results had different colored wiring. if someone could maybe show me a pinout diagram for the o2 that would help because it has the stock style plug on the o2.

 

should be white white black gray if i remember from my obd2 car. the 2 whites are the heater wires, then i think you have signal and ground.