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

Headlights won't turn on but mostly everything else does.

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Old Jun 12, 2018 | 08:31 AM
  #1  
Konicokirkland's Avatar
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Joined: Aug 2017
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Car: 1983 Chevrolet Camaro Sport Coupe
Engine: 2.8L V6
Transmission: 700r4
Headlights won't turn on but mostly everything else does.

Not too long ago my 83 sport coupe was involved in an accident that resulted in front end damage on my car, ive gotten most of the parts replaced but I'm scratching my head with the headlights, They won't turn on along with the dash cluster lights (the lights for the center console turn on just fine) only illuminating only the left turn arrow and the high beam icon on the dash. Would the problem be my switch even though everything else works fine? Or would it be something else with the wiring itself
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Old Jun 18, 2018 | 05:56 PM
  #2  
NINÅ's Avatar
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Joined: Jan 2006
Posts: 3,341
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From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
Light Fight

Using a voltmeter or test light, probe the 12 AWG red wire going to the headlight switch.

Is there power there?

If no, check for a bad fusible link near the battery.

If there is power on the the
red wire put the switch in the headlights on position.

Probe the
yellow wire at the switch.

Is there power there?


Happy Racing !



If You Need To See Brake Lights To Know When To Apply Yours . . . . . . . . . GET OFF THE ROAD IMMEDIATELY!
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Old Jun 18, 2018 | 06:00 PM
  #3  
mmadden55's Avatar
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Joined: Nov 2008
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From: Houson
Car: 86 Firebird
Engine: 305 SBC
Transmission: 700 R4 TCI
Axle/Gears: 3.42
Re: Headlights won't turn on but mostly everything else does.

^
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Old Jun 23, 2018 | 10:52 PM
  #4  
Konicokirkland's Avatar
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Joined: Aug 2017
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Car: 1983 Chevrolet Camaro Sport Coupe
Engine: 2.8L V6
Transmission: 700r4
Re: Headlights won't turn on but mostly everything else does.

Alright, so I have an update on my headlight situation, I had unplugged the headlight switch and left it it in the car for about a week. I plugged it back in and all of the sudden i had headlights again, Sorta.

Here's a video on my current situation with it:
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Old Jun 28, 2018 | 05:05 PM
  #5  
Hotdogstand's Avatar
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Joined: Jun 2006
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Re: Headlights won't turn on but mostly everything else does.

I would have to dig out the old shop manual for the wiring diagrams (or you can google search it), but that makes me suspect the switch is failing.




Maybe the "previous owner" somehow managed to get both low beam plugs on one side and both high beams on the other? I've seen stranger things...
Anyway, there's the schematic, courtesy of Austin Third Gen. Just focus on the area in the yellow bubble.

Last edited by Hotdogstand; Jun 28, 2018 at 05:14 PM. Reason: More info
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