Okay guys, I just bought a heated oxygen sensor and the proper connector to go with it, but now I need some instructions on how to wire this thing up. There are three wires (all are white on the connector) so I am assuming that one is for the signal, one is for power, and one is for ground. Problem is, which is which? Also, where should I splice into for power, and for ground? Any info would be great.

What replacement part is it for? Is it from a corvette or what? Find that info out and it should help a lot. I think that's your only option.

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, Jon (350 TBI!)
91 Red My website

The sensor is from a 93 vette and I am putting it in my 88 IROC. Many people who have headers on this board have done this swap. I really need some help as to which wires are which. Anyone?

Plugging that connector to the O2 sensor will tell you which white wire goes where. I.e. the purple wire on the O2 sensor will go to the O2 signal wire for the ECM. I don't remember what the other two wire colors are, but one goes to switched ignition, and the other to ground. I don't think it matters which one.

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