o2 sensor, what wires are what

[90CherryTSI]

which wires are what? ground, signal, heating element? On the 4 wire...which one do you tap for the o2 signal wire? i have the haynes but it doesn't show which wire is which. Thanks!

 

[SlowSpyder]

why dont you just get it from the wire going to the ecu? I think its pin #4

 

[R3dR]

there are 4 wires
1 is ground (black)
1 is ecu ( tap this one that is the odd ball
2 are heaters (same colors )


But you may as well go into the passenger side kick panel and in the harness there is a female plug end all by itself that you can plug into to get the o2 signal.