Long Rider
Full Access Member
- Joined
- May 5, 2023
- Posts
- 78
- Reaction score
- 158
- Location
- La Grande Oregon
- First Name
- Jim
- Truck Year
- 1979
- Truck Model
- C10
- Engine Size
- 350
I think if you disconnect the headlights from the power source one at a time and the truck will shut off then it has to be that the wiring for that headlight, is back feeding to the key. I would disconnect the head lights one at a time. if it still keeps running with only one headlight plugged in then your problem is back before the headlight wire splits. I agree with the other guys here it is very likely to be a ground problem. Your headlights run of a constant hot feed So they shouldn't be affected by the key. Has some one been installing a radio or a clock? They both use a switched and a constant hot wire feed. If so I would check those.
