Yesterday my son was on a 300 mile trip pulling a car trailer. While driving in the rain, all electrical shut off, wipers, dash lights, everything. The truck coasted to a stop on the side of the road.
He tried the key...nothing.
He jumped out opened the hood and checked the battery connections. They were tight. Looked around, couldn't see anything. He slammed the hood (gonna call home) and everything started up. (Not the engine, he had to turn the key) He must have left the key on, wipers started, dash lights came on. He drove home without incident. I drove around last night and couldn't get the problem.
I had a volkswagon do that to me several times. I would be driving along and everthing would shut off. It was a five speed and I could pop the clutch and it would just take right back off again. Dealer tried the trial and error appoach and could not find the problem. They finally went through the entire electrical system and resoldered all the electrical connections and I never had the problem again.
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