Here's the latest:
Was just out in the camper and checked out the following:
The converter is a PD 9130. The "safety" fuse is good on the converter and the wiring all looks good. I am getting continuity at the positive and negative leads at the converter. The plug from the converter to the electric panel was plugged in as it should be. I have the owners manual for the converter and everything appears as it should be in the camper.
Carol: The positive and negative were properly connected at the battery so that is definately not it.
Byron: I checked where the battery cables exit the trailer (exactly where you stated). However, there is no second fuse as you stated. There are a bunch of connectors at this point but certainly no second fuse. In addition, I traced the wires all the way through the bunk area to where they enter behind the bath (couldn't follow them there) and there is no second fuse along that run as well. Interesting, because I checked here on this forum and saw a wiring diagram which indicates a second fuse just inside the where the battery wires exit the front of the trailer. Can't really believe I can't find this fuse. I opened a bunch of wires taped together at that point and there are three connectors -- no fuse.
Bob: The person I bought the Scamp
from used it strictly as living quarters at a job away from his home for about 3 years. If memory serves - he said it was always plugged in and didn't need to have a battery. However, I am going to call him today to confirm that he NEVER used a battery with it.
In my exploration one thing is bugging me. I can't find where the positive wire from the battery lead connects to the electrical panel. On the DC side, all I can see (and you have to be a contortionist to be able to see behind the panel!!) is the positive wire from the converter connecting to the panel. On the diagram on the panel, it says the leads from the battery AND the converter are connected together to the same hub. Where can the wire from the battery lead possibly end if not at that point??
As long as I can run everything while plugged in all is OK. But I sure want to be able to run things when no shore power is available.
Any further input would be greatly appreciated!! Thanks already for all your suggestions!