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O2 sensor wiring?

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Old 01-20-2003, 08:17 AM
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Default O2 sensor wiring?
I need to find out what the 4 wires on an O2 sensor hook up to, which one is the ground and heater and signal, and what is the 4th wire?
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Old 01-20-2003, 10:22 PM
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Default Re: O2 sensor wiring?
Thank you very much!
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Old 01-21-2003, 12:51 AM
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Default Re: O2 sensor wiring?
Pink - 12v source
Black - Ground
Tan/White - PCM Low
Purple/White - PCM High
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