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Old 05-30-2003, 08:04 PM
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Post (86 pontiac firebird) hit a dead end in finding short

my interior lights do not work & i traced the wire all the way down to a point where there is a green wire w/ a white stripe which controls the dimming. a green wire, and a grey wire .. it looks like a serial cable to a computer, thin and wide.the wires i guess all go into it and are gone......does anyone know where i should go from here... i know for sure the green wire w/ stripes and the grey wire are getting power but i cant get nothing out of the plain green wire and i dont know where the green and grey wires came from because the wiring is extreamly difficult to get to without ripping my entire car to shreads.. thanks in advance for any help , Christopher

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Old 06-01-2003, 04:38 PM
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Your best bet is to find a wiring diagram. I used to just go to the local library and print-out the electrical schematic for the vehicle I was working on at the time.
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Old 06-11-2003, 11:31 AM
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The grey wire should be your instrument lamps, controlled by the dimmer. The interior lights (like the dome light and the lights that come on when the door is open) are an orange wire which is always hot. The switches in the doors control the ground and should (I think) be the white wire running to the bulbs under the dash. Check that you have +12V at the orange wire in all key positions. Then check that you have GND at the other wire at the bulbs when a door is open or when your dimmer is turned all the way up and past the detent.

Good luck.
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