I have a 2012 Rockwood Signature Ultra Lite fifth wheel. I have power on the red wire at the battery and no power on the red wire at the fuse panel. What is in between? A sticker on the panel refers to "reverse polarity protection fuse" but doesn't suggest where it might be.
Thanks for all the help. Those unnamed fuses in the panel are ok, all fuses are good. I haven't looked around the hitch area yet. I have no power right on the red wire at the panel so it disappears between the wire at the panel and the wire going into the body at the battery.
If you look at post #16 in this thread it will show you some mini-breakers that are located between battery and either DC panel or other equipment. Look in the front of your fifth wheel for these somewhere and press small black buttons on breakers....
The problem was a manual reset breaker in the pin box. The power wire goes from the battery to the goose neck, through a breaker and back to the fuse panel. That affected all interior equipment. Other wires come from the battery and go through breakers to landing gear and other near-by circuits and they were ok. Thanks for the ideas, it helped.