I'm wiring in a new wideband O2 and replacing the stocker 4wire. I believe the signal is off the white, but what are the other 3 wires for? I was hoping to use the stocker haness for o2 heater and grounding, but i need to knwow hat wire goes where.

can someone dish out a quick diagram/description of color wo what it does? I have the color to ecu pin but that's it. from the manual.

Thanks for your help in advance.

 

green is ground.
black on pin 4 is heater control.
black on pin 3 is 12 volt power source turned on by pgm-fi main relay.

 

Thanks!