I have a 2003 Coachmen Catalina 29 FT Class C. When I plug into electric the coach's ceiling lights do not come on shouldn't there be inverter for the coach to make 12 volts. Thanks
Yes, there should be a converter. I would check for a blown reverse polarity fuse in the converter or a blown fuse in the DC panel that comes from the converter. DC power distribution panel is normally to one side of the 120 volt circuit breakers behind a small metal plate held in place by a thumb screw.