After not finding anything behind the batteries I called Thor. After a little research I was informed I don't have a Trombetta as the Battery Control Center handles those functions and it is located in the engine compartment on the drivers side. (up in the corner). The Thor tech asked if my interior lights were working with the shore power off. I hadn't checked but he said if I didn't the first thing I should check was the wiring in the Battery compartment since the house batteries only showed 12.1 volts with my meter. I mentioned to him I noticed the stud on the frame for the ground connections looked very rusty. Sure enough, no shore power, no lights! cleaned up the ground connections and the lights came on. When I restored the shore power the converter started charging all the batteries again. Hopefully that was the only issue.
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