[Shane826]

I would pull the refrigerator vents, the connections from Bargman to TrailManor are there. Ground is white on both sides. Trace the TrailManor side of that connection, see where it’s tied in. SPOILER ALERT: According to the schematic I have, that wire goes to the negative side of the converter. I would pull the converter and check your connection and then test that wire for open/high resistance, short to ground, etc.