My interior lights work on shore powerbut not with battery. Battery is charged, and brake away switch has juice, all fuses good. Any ideas would be appreciated...Thankyou
Normally reverse polarity fuse are in the converter and two of them. One under frame protects the small amperage wire from high amperage of the battery. If this is the one adjacent to the battery, I would suggest changing it out to an auto-resetting 30 ampere circuit breaker.
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