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I think by design those things generate a lot of heat.

I have some of the grease also leaking from mine.....

I had to replace my switch not long ago, it would no longer turn on the headlights, parking lights and dash lights would come on, but no head lights.

My neighbor lost dash lights to his truck (an '02), and was driving him crazy trying to figure what was causing the problem....
After having replaced mine, I suggested we do the same with his.....did it and it worked.
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