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Old 01-07-2017, 07:14 PM   #6
VetteVet
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Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,703
Re: dash lights out when headlights on!! Help!!

It would appear that the orange wire was not hoy at the light switch. It is supposed to get a hot feed from the red wire at the fuse panel according the wiring diagram. Then the orange wire feeds the brake switch, the dome light, and the headlight switch with power.

It also feeds the brown wire at he headlight switch when the lights are on. It also feeds the green wire at the headlight switch, which runs through the dimmer on the HL switch for the dash lights. That's why I thought jumping the brown and green wires at the HL switch would power the dash lights in both positions.
It seems that you have solved the problem and as long as you aren't draining the battery when the truck is off and the switches are off I think you'll be fine.
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