That is pretty much what I was thinking.Jeff, you think my initial wiring cooked the switch? Then the second time I got it running without the domelight because there was nothing drawing power there? And so now with a new switch and no domelight I am assuming it will work. What you think?
Then I will investigate the dome wiring more if she starts.
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Without being there, I can't be sure.
But I'd bet almost anything that you were hot to ground with that domelight.
Again, I wish I were closer. I bet I could make that domelight work, and not cause a problem.
I would certainly leave it completely disconnected, (and I mean, wires pulled completely off of it and insulated), before I tried it again.
Hey, here's something to try.
You know those square plastic 'nuts' that you can get for fastening your license plate down?
Completely remove your dome light. Body and all.
Chillman said that you had two screws through that light, that go straight through the wiring. I am thinking that at least one of those is supposed to be ground, and the other is of course, hot.
Determine which one of the two wires is hot.
Now, drill the metal of the cab, where that screw was screwed in. You'll have to use something like a square file after that, to make it a square hole. Probably tedious and time consuming, but if you want the light to work, probably also worth it.
Shove that square plastic nut into the square hole in the metal.
Now put everything back together, but make sure that you use a screw on the 'hot' side, that doesn't go so far through that plastic nut that it again contacts the body of the cab.
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Now, IF one is hot, and the other feeds some other bulb, (So both are essentially hot, when the light is lit...)
Then put in two of those square nuts, and make sure the screws are not contacting metal anywhere.
The essential thing to do before you start any of that, is to test and find out which wire or wires is/are hot. And where ground is supposed to be. Then be careful to make sure ground does indeed ground, and careful to keep hot away from ground.
All that is fairly easy if I have it right at hand. But gets complicated if I try to explain it all.