What year?, make and model was the camper? The mattress? What was the history of the bed? Something heavy might have been thrown on the bed and a corner cut the wire enough to spark. Not sure, but alittle more info would help, since tens of thousands of heated mattresses are out there in campers, there was probably a special circumstance that caused this. Glad you and your family are ok.
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2018 Rockwood Signature Ultralight 8329SS
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