Does anyone know which of the four wires going to my 2004 cavalies' O2 senser is the (high) signal, that i need to wire into? I cant seem to find a wireing schematic anywere.times4
Pin A is the low signal it is Tan in color
Pin B is the High signal it is purple in color this is the one you want.
Pin C is the heater low control it is Dark green
Pin D is ignition 1 voltage it is pink .
I used this for my Autometer A/F gauge hope this helps you.
Thats Him Officer The WICKED One.
