Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

question about wiring for headlight motors

Old May 29, 2013 | 11:19 PM
  #1  
ealyboy2013's Avatar
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From: Brownsville OR
Car: 1987 Trans Am
Engine: carb. chevy 350
Transmission: 5spd
question about wiring for headlight motors

Hey guys so my headlights sometime's don't pop up, but I know the motors aren't gone because they'll roll down if I manually roll them up and sometimes they do pop up on their own when I push the button. I'm thinking that maybe a wire is loose or a module is going out or something, but I need to know something about the wiring. When I un-hook the wires from the motor, and test them, one turns on when I want the light to go back down, the other one doesn't turn on when I want the light to go up. The wire that came on when I was wanting the light to go down will shut off when I push the button for the light to pop up. So, is the wire that isn't coming on at all supposed to get hot? because it's not, is it a ground? if you could answer that'd be great, cuz I can then find a solution for the problem. Thanks guys
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Old May 29, 2013 | 11:51 PM
  #2  
6SIX6's Avatar
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From: Mississauga,Ont,Canada
Car: 89 IROC
Engine: LSX 6.0 370, TU2 Cam, Fast intake
Transmission: T56 w/ lots of goodies
Axle/Gears: 8.8, Posi, 4.10, 31 Spline
Re: question about wiring for headlight motors

Sounds like a short to me. Look up a diagram and trace the wire back and see if it got knicked by something or if its loose in the plug. Look for oxidation in the plug as well where it connects as that might be a issue as well
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Old May 30, 2013 | 06:41 AM
  #3  
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From: Western NY State
Car: 87 bird
Engine: enough to break stuff
Transmission: manual th400
Axle/Gears: 4.10
Re: question about wiring for headlight motors

test the motors with a jumper one pos and one ground one way will go up and the other down. if that works the motors are fine. if they go up or down you know the wires from the module to the lights are fine. sounds like either the module or light switch is a problem i dont have the diagram now but i would test the switch inputs at the module because its easier to get at, if those check out the module is bad
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Old May 30, 2013 | 07:10 AM
  #4  
carattini's Avatar
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From: North Carolina
Car: Pontiac 89 GTA
Engine: 350 TPI 5.7L V8
Re: question about wiring for headlight motors

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Old May 31, 2013 | 06:22 PM
  #5  
ealyboy2013's Avatar
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Joined: Apr 2013
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From: Brownsville OR
Car: 1987 Trans Am
Engine: carb. chevy 350
Transmission: 5spd
Re: question about wiring for headlight motors

hey thanks guys Got it figured out, had a loose wire out of the headlight door module haha
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