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02 Trans Am no headlights after car wash

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Old 12-04-2013 | 11:00 AM
  #1  
94arcticwhiteM6's Avatar
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From: Apple Valley, CA
02 Trans Am no headlights after car wash

Yesterday morning my headlights worked just fine. That afternoon I washed the car, now they will not come on. They do not pop up and the headlights themselves do not light up. Going to check a few things today but looking for any other suggestions.
Old 12-04-2013 | 09:43 PM
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GaryDoug's Avatar
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Re: 02 Trans Am no headlights after car wash

There's really only two things to go wrong in this case other than wires and splices: the light switch itself and a fusible link among those next to the underhood fuse/relay boxes.
The light switch does have an internal circuit breaker that will reset after a period of time. If nothing else works, try unplugging all 4 headlamps and waiting an hour to see if the headlamp door motors work then. If it does, that would indicate a short in the area of the headlamps.

Last edited by GaryDoug; 12-04-2013 at 09:45 PM.
Old 12-19-2013 | 05:35 PM
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94arcticwhiteM6's Avatar
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Re: 02 Trans Am no headlights after car wash

The motors work when you unplug all 4 headlights. I'm figuring there is a short somewhere. I get continuity to ground from the ground pin and hot pin of the headlight connectors. The breaker does seem to do a reset and I will get 12v on all of the hot pins, but plug in a headlight and it all goes away.
Old 12-19-2013 | 05:51 PM
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Re: 02 Trans Am no headlights after car wash

Try unplugging all 4 again, then after confirming that the motors work, plug them in again one at a time. Check the motors after each one is plugged in. You can either narrow it down to a signal lamp or verify that it doesn't matter which one(s) are unplugged. If it is just one, there is a short, and yes the lamps themselves can short internally. If it doesn't matter which one(s) are unplugged, the circuit connection is weak somewhere, perhaps at the fusible link or switch.
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