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71GMC_3/4T · 10-24-2002, 12:05 PM

Disconnect the light you ran to the headlight wire and see if the problem goes away.
I think the dimmable lights put 12V on one side of the light all the time and the headlight switch pulls the other side of the lamp to ground through the big wirewound variable resistor in the headlight switch. It may be finding a path to ground somewhere other than where it should be.

10-24-2002, 12:05 PM	#4
71GMC_3/4T Weapons Of Construction Join Date: Apr 2000 Location: Colorado, USA Posts: 1,095	Disconnect the light you ran to the headlight wire and see if the problem goes away. I think the dimmable lights put 12V on one side of the light all the time and the headlight switch pulls the other side of the lamp to ground through the big wirewound variable resistor in the headlight switch. It may be finding a path to ground somewhere other than where it should be. __________________ 1971 GMC 2500, 402/TH400 4.10 Daily Driver Lafayette, CO