
- 4 wire o2 install
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4 wire o2 install
ok i have a 89 ef hatch it has been switched to obd1 and has a p28 ecu. i have 4 wires coming off my o2 sensor. 1 is white 1 is green 1 is black and 1 is yellow. where do they go? thanks for your help and i cant wait to get this over with....
Last edited by bodydropped; 03-31-2007 at 08:30 PM.
yes i am....

- 4 wire o2 install
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