headlights not working - The 1947 - Present Chevrolet & GMC Truck Message Board Network

68c10owner · 11-02-2003, 06:00 PM

i`ve got a interesting problem. went out to drive the truck the other night and turned the lights on and they did`nt work. the running lights, tail lights, brake lights and high beem all worked fine but the low beam will not work. electrical problems are not my strong point. anyone have any ides? thanks

Longhorn Man · 11-02-2003, 06:04 PM

Unplug the high beam switch on the floor and look for corrosion.
With the lights turned off, you can flean the contacts up on the switch and in the plug with a wire brish.
The switch its self copuld be dead too.
Those are the 2 #1 reasons for headlights to not work properly.

cheatham · 11-02-2003, 06:35 PM

I agree with Andy.

68c10owner · 11-02-2003, 06:44 PM

thanks longhorn. i`ll check it out.

68c10owner · 11-02-2003, 09:38 PM

well i think i found my problem. i got the plug off of the dimmer switch and one of the terminals was melted and the terminal on the dimmer was black. guess it`s time to rewire the truck now.

Longhorn Man · 11-03-2003, 12:27 AM

Not too uncommon for these trucks.
If you wire up the headlights with relays, not only will you get brighter headlamps, but the wires won't carry so many amps and they won't burn up like that.
Here is a link that will show you how to do it. http://www.classictruckshop.com/club...ead/lights.htm

11-02-2003, 06:35 PM	#3
cheatham I need a brake! Join Date: Jul 2002 Location: Nashville, TN Posts: 474	I agree with Andy. __________________ JP MEMBER OF THE DISCS UP FRONT CLUB 1971 Chevy C10

11-02-2003, 06:44 PM	#4
68c10owner Registered User Join Date: Oct 2003 Location: Carmichael, California Posts: 3,006	thanks longhorn. i`ll check it out. __________________ Anthony

11-02-2003, 09:38 PM	#5
68c10owner Registered User Join Date: Oct 2003 Location: Carmichael, California Posts: 3,006	well i think i found my problem. i got the plug off of the dimmer switch and one of the terminals was melted and the terminal on the dimmer was black. guess it`s time to rewire the truck now. __________________ Anthony

11-02-2003, 06:00 PM	#1
68c10owner Registered User Join Date: Oct 2003 Location: Carmichael, California Posts: 3,006	headlights not working i`ve got a interesting problem. went out to drive the truck the other night and turned the lights on and they did`nt work. the running lights, tail lights, brake lights and high beem all worked fine but the low beam will not work. electrical problems are not my strong point. anyone have any ides? thanks __________________ Anthony

11-02-2003, 06:04 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Unplug the high beam switch on the floor and look for corrosion. With the lights turned off, you can flean the contacts up on the switch and in the plug with a wire brish. The switch its self copuld be dead too. Those are the 2 #1 reasons for headlights to not work properly.

11-03-2003, 12:27 AM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Not too uncommon for these trucks. If you wire up the headlights with relays, not only will you get brighter headlamps, but the wires won't carry so many amps and they won't burn up like that. Here is a link that will show you how to do it. http://www.classictruckshop.com/club...ead/lights.htm



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