Problem with my headlights - Chevelle Tech
Electrical & Wiring Troubleshooting electrical problems.

 
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post #1 of 8 (permalink) Old Feb 10th, 06, 10:26 AM Thread Starter
 
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Unhappy Problem with my headlights

i have a 4 door 67 chevelle and am having problems with my headlights . they work on high beam but when i push the dimmer switch to turn them to low beam the go completely out ive tried replacing the dimmer switch on the floor what do i look for next . thanks josh
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post #2 of 8 (permalink) Old Feb 10th, 06, 11:12 AM
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Re: Problem with my headlights

First thing I`d check would be take a test light to the positive wire inside the low beam light socket and see if the socket has power when low beam headlights are on. Then if you have power there make sure the plugs are on the backs of the lights securely. Sometimes the prongs inside the plugs move out of the holders and don`t make a positive contact. Try those first and see what the results are.
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post #3 of 8 (permalink) Old Feb 10th, 06, 11:52 AM
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Re: Problem with my headlights

Well you obviously have power to the dimmer... and grounds to the headlights.

I would recommend getting a basic test light the probing the circuit to see where you do and do not have power:

1. Low beam output of dimmer switch - likely good.
2. Passenger compartment side of firewall bulkhead.
3. Engine side of firewall bulkhead.
4. Headlight socket.

Not too much that can go wrong here. You have verified that all 4 lights are on on high beam?

Steve
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post #4 of 8 (permalink) Old Feb 10th, 06, 12:42 PM
HD
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Re: Problem with my headlights

first thing to check is make sure the low beam bulbs are not blowed.
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post #5 of 8 (permalink) Old Feb 10th, 06, 9:18 PM
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Re: Problem with my headlights

You might want to check the dimmer switch that happens alot.

Mike
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post #6 of 8 (permalink) Old Feb 26th, 16, 6:19 PM
 
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Re: Problem with my headlights

I am having a similar issue with my 68 Chevelle. When i hit the dimmer switch one headlght goes out on the passenger side and the high beams do not come on at all. I also replaced the dimmer with a new one. Amy suggestions would be appreciated.
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post #7 of 8 (permalink) Old Feb 26th, 16, 6:51 PM
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Alex
 
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Re: Problem with my headlights

Ground on the core support and check the connection to the headlamps
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post #8 of 8 (permalink) Old Feb 26th, 16, 6:59 PM
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Eric
 
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Re: Problem with my headlights

Sounds like the low beams are burned out. If you have power at the socket, change the lamps.

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