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Old 07-31-2019, 01:20 PM   #5
WorkinLonghorn
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Join Date: Dec 2006
Location: Studio City, Calif.
Posts: 2,858
Re: GMC Headlights (4 bulbs) all dead or dims only.

Turned out to be a defective brand new ACDelco dimmer switch. I tested the continuity through the switch and only one position of the switch worked. Returned it for another and problem solved. Thanks for the replies. I should have tested first but I'm used to new things actually working. -BA
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'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, 2nd owner, Work-Truck supreme. Best $300 I ever spent.
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