I have a T28 Seirra Sport toy hauler. My rear interior lights and the outside flood lights are not receiving full power. I have jumpered into the wall switch hot and the lights are still dim. I am going to look at the grounding. I called For. River. customer service and was told no wiring diagrams are available. They did tell me the grounding is brought into the compartment behind the inverter. I have good lighting everywhere else. The lamps under the cabinets and the radio operate fine. Does anyone have a similar problem? I will post as i troubleshoot the individual fixtures grounding and power. Thanks for any help. Pete.