Originally Posted by ATx213
Looks like the dealer/manufacture forgot to put a fuse in the little fuse box that comes off the positive battery terminal. Hopefully that will do it.
^^ This ^^
I found out quickly that this 30 amp fuse can identify if/when power is being drawn from the battery; the rep unplugged it and handed it to me during the demo/pickup. When we went on our first camping adventure, I installed the battery, plugged the fuse in, and heard the "arc", indicating something was drawing off the battery. All the inside lights were on!
I was also told it's a good idea to turn off the main breaker at the inside power box as well.
Also showing my "newbie" at this, I did not know at first that the battery will charge from the converter when the camper is plugged into a 120 volt source. I was being very stingy on what interior cabin lights were on at night thinking I was draining the battery, even though I had the trailer plugged into a full hookup site.