Light won't work
Thread Starter
Instructor
Joined: Sep 2017
Posts: 123
Likes: 3
From: Cedar Park Texas
Light won't work
The headlights, tail light, side marker light, and dash lights in my 76 won't turn on when I pull the headlight switch. Doesn't look like any of the fuses are blown, could it be that the headlight switch is bad?
Melting Slicks
Joined: Dec 2009
Posts: 3,233
Likes: 657
From: Thunder Bay
It could be, but no one can say for sure without doing some diagnostic work. You should test to see if there is power getting to the switch, and then you can test the wires from the switch to the lights to see if power is getting through the switch when it is turned on. Start by getting a copy of the wiring diagram so you can figure out how the circuit is supposed to work.
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,754
From: Charlotte NC
It could be, but no one can say for sure without doing some diagnostic work. You should test to see if there is power getting to the switch, and then you can test the wires from the switch to the lights to see if power is getting through the switch when it is turned on. Start by getting a copy of the wiring diagram so you can figure out how the circuit is supposed to work.
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The headlights get a seperate power supply than everything else so its probably the switch.
But, I just had a similar problem with my dash, tail and marker lights only. The meter showed power but it didnt support any amps. Use a test light as well and it will be better information. I ended up with a dead wire to the switch. To test I ran jumpers from the headlight hot wire to the dash lights and the marker lights one at a time and they all worked. I added a fuse tap on the load side and ran a wire from the fuse to the switch. the fuse is still inline but its still A temporary fix until I can pull the fuse panel and rewire it.
But, I just had a similar problem with my dash, tail and marker lights only. The meter showed power but it didnt support any amps. Use a test light as well and it will be better information. I ended up with a dead wire to the switch. To test I ran jumpers from the headlight hot wire to the dash lights and the marker lights one at a time and they all worked. I added a fuse tap on the load side and ran a wire from the fuse to the switch. the fuse is still inline but its still A temporary fix until I can pull the fuse panel and rewire it.
Last edited by Rescue Rogers; May 30, 2018 at 08:21 AM.
