Headlight Switch Cranks Engine??

Manny Valencia said

I understand when the door opens it triggers the dome light to come on due to the switch making ground contact.

There are no other on/off switches that control the dome lights.


I just want to make sure that when I unplug the black and yellow wires from the door jambs.

This will keep the lights off so I would need to install a switch to be able to turn on and off the dome lights.

Since the dome light fuse kept burning, I put a switch connecting the fuse terminals so I am able to turn the dome lights on and off without a fuse

Click to expand...

Manny that's not a good idea. Because now whatever short is causing the fuse to blow, will continue to conduct battery current to ground, without anything to stop it. If the fuse is a 15 amp, and 30 amps go thru it, it will blow and interrupt the circuit. But if you eliminate the fuse, then the current (say 30 amps) will continue to flow, and the wires will heat up, melt the insulation, and create more shorts to ground. Then you have real problems. If you start to smell burning plastic when the dome light is on, turn the switch off!