Sorry, I know this is an odd question. I have a 2002 Fleetwood Mallard 25A travel trailer. I had a blow out last weekend that completely mangled the inner sheet metal fender well and took some of the ...
The bus with white wires sounds like your common wires for 120 volt. These would not be grounded to the frame. There should be a separate bus for ground wires. The white wires are probably 12 or 14 gauge 15/20 Amp.