We finally got to use the crank to raise the kingpin enough to get the hitch under it
. We had no power to the landing gear or rear stabilizers as we left our last camping spot.
On the way home we stopped at our local, but small, RV repair yard. They were able to isolate the problem to a complex "box" mounted behind the batteries. I think it's an electrical distribution box designed by Lippert, but haven't located it on Lippert's website. There are lots of electrical wires coming into it and many going out, to STB, ROOM, AWG and LIGHT. The immediate solution was to bypass the box, giving us power on to the landing gear, allowing us to drop the Montana at our storage yard. The service personnel are woefully unfamiliar with the Lippert box, and have asked me to check for any manuals I may have that cover it. I'll look, but am sure I've got nothing.
It's probably best to take the trailer to the dealer, but I'm curious whether others have had issues with this "box."
Bill