I probably should have mentioned that I installed a brand new battery last week. I agree it is not a severe short - else I would be smelling smoke or stuff would not be working at all.
Another thing I did prior to this latest round of testing today, was removing all 12V fuses in the panel only to come back a day later to find that the battery was drawn down considerably after a complete charge. From that I concluded that the problem was not in the individual circuits in the camper compartment, and that it likely was either in the path on the way to the panel, or an external connection - which would be the pigtail.
I will get a test light - been needing to do that for a while. Thanks for the suggestions - I think I'm closer now.
