Thor Forums

[CoachKD]

Good Morning,

I have a 2017 Thor Motorcoach Challenger 37YT and I am having low voltage issues. I just replaced both of batteries for the 12 volt system and tested the coach battery. I am hooked to a 50 Amp 220 volt shore power, but have no low voltage unless I run the engine. I have 220 and 120 voltage at the main breaker and all other breakers. I have pulled and tested all 12 volt fuses, tested voltage at the convertor and I have 120 volts coming and 12 volts out. The fuse at the battery is good and not tripped, but still no low voltage. Any ideas where else to check?

Thanks in advance for any assistance.

Kevin