Dimmer switch would be my first guess. I thought my switch went out, so I bought a new one, but that didn't fix it. Then I remembered that I had disconnected the plug at the core support for some reason and forgot to hook them back up
Anyways, I left the new switch in, and about a year and a half later, that new switch went bad. Replaced it with the one I first took out, and that switch has been great ever since
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Christian Carpenter
1963 C10 -
Frankentruck 283, 3 speed with overdrive
Overdrive wiring here
1963-ish truck bed trailer -
Half-Wit
1981 C10 -
Penny 305, th350
1995 Dodge Dakota Sport
"I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson