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I was pushing snow up a hill in the dark the other morning and suddenly the truck just stopped running and went dark. Total electrical failure. Lights out, no fuel pump, no starter, no gauges, nothing. I opened the battery box to check connections ( I recently replaced a battery) and didn't see anything wrong, but just as suddenly the electrical system came back on. Has anyone else seen this? Is there a main breaker somewhere that could be getting ready to fail?

Thanks

Loose post internally ? Loose post connection ? Possible plate connector problem? Breakers are behind the dash.

Loose or corroded ground wire?
This happened to me years ago (but never came back on): the negative cable fell out of the battery post clamp.
Gary

There is no 'main breaker', just those for lighting, ignition circuit, horn, and accessories (rare). Later trucks had the lighting breaker internal to the light switch.

PoW