94 to 96 O2 sensor pinout
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Melting Slicks
Joined: Dec 2008
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From: Mystic CT
94 to 96 O2 sensor pinout
I want to put a 94-96 front pre cat O2 sensor on my 91. It is a delco afs-75 or gm# 25312184 It has a 4 pin connector and wires as follows. A tan B violet C and D brown. I am thinking A sensor ground B sensor signal and Cand D heater. If anyone has the factory wiring with colors and pin positions I would appeciate it.The harness colors may be different than the sensor so might have to follow the diagram to see what the pin positions are for. Thanks for any help. Dave
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I want to put a 94-96 front pre cat O2 sensor on my 91. It is a delco afs-75 or gm# 25312184 It has a 4 pin connector and wires as follows. A tan B violet C and D brown. I am thinking A sensor ground B sensor signal and Cand D heater. If anyone has the factory wiring with colors and pin positions I would appeciate it.The harness colors may be different than the sensor so might have to follow the diagram to see what the pin positions are for. Thanks for any help. Dave
Last edited by WVZR-1; Sep 29, 2012 at 10:24 AM.
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Joined: Sep 2003
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A - Tan
B- Purple
C- Black
D-Pink
A Service/replacement sensor since C & D are heater yes they both could be brown. Your assumptions are correct!
Last edited by WVZR-1; Sep 29, 2012 at 12:00 PM.
