Forum Discussion
Old-Biscuit
Dec 08, 2016Explorer III
enblethen wrote:
Old-Bisquit: The fuse/circuit breaker for the power to the rig could be between the splice at the umbilical cord/ rig wiring and the battery.
OP: was battery disconnect while on trickle charge? If waas and installed with incorrrect polarity, you could have blown the fuse.
Umbilical cord does NOT provide trailer 12V SYSTEM except to charge battery. (and trailer exterior lights)
OP had battery out of trailer on trickle charger.then reinstalled battery
Trailer 12V SYSTEM only working when connects to tow vehicle via umbilical cord which ONLY provides a charge circuit...does NOT connect to trailer 12V except thru trailer battery
Blown reverse polarity fuses kills 12V system either from battery OR from converter
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