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Old 08-06-2017, 04:46 PM   #1
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Headlights Stopped working

Hey Chevy People,
My headlights on my '72 c10 took a dump all of a sudden last night. The toggle switch looks good, and other lights (dome, parking, etc.) work fine. Have any of you got an idea what might have happened/what to do?
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Old 08-06-2017, 05:20 PM   #2
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Re: Headlights Stopped working

use a tester for power at the socket.
If you have power at the socket then it's a fault in the ground
Bad ground is often the culprit.
Also check socket plug connector for corrosion.
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Old 08-06-2017, 05:21 PM   #3
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Re: Headlights Stopped working

So you have a toggle switch?
You should use a tester to see if you have voltage at the headlights and along the wires that go to the headlights.
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Old 08-06-2017, 06:42 PM   #4
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Re: Headlights Stopped working

My headlights [Hi + Lo] went out when my dimmer switch went bad. That's the toe-operated one on the floor, left of the clutch pedal. Or Brights/Dim switch.
R + R'ed the dimmer switch and the lights worked normal again.

Every 25 years I like to rebuild that 292, whether it needs it or not.
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Old 08-06-2017, 08:42 PM   #5
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Re: Headlights Stopped working

Could be any number of things but the most common problem seems to be the dimmer switch or the wiring / connector at the dimmer switch.
- Mike -

1972 K20 LWB 350/350/205

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Old 08-06-2017, 08:51 PM   #6
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Re: Headlights Stopped working

Welcome to the boards!

Multi-meter's are your best friend, but start in reverse from ground then chase positive!

1970 C10 8' Fleetside, L6 250, 3 on the Tree.
The most basic of pickup trucks!
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Old 08-06-2017, 09:12 PM   #7
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Re: Headlights Stopped working

A new dimmer switch fixed my headlights that stopped working years ago.
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