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Pontiac of the Month

Debbie Harris's 1969 Grand Prix

2022 September
of the Month

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color coat wire diagram


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I have a 96 sunfire by 2.4 and no one seems to know the color coating for down pipe oxygen sensor from the oxygen sensor to the next clip there are four wires a purple a brown and two lighter brown wires same in color need to figure out witch is the signal wire and ground I assume the two wires that are the same color are heat wires

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The two lighter brown should be the O2 heater. The purple should be the O2 + and the brown should be the o2-


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