Funny thing was the sales guy at the dealer said he did not know why they would put a solar disconnect on trailer.
U need to allow the well known lost art of Common Sense to prevail. Most Sales People just have a job, and have no idea about how anything that they sell works. I cannot say how many times I have gone into a place to purchase something, and asked questions, and the "sales person" just dumbfounded, had no clue and just made chit up.
EXAMPLE: I was at the Chevy house Dec 22 looking at a 23 Sierra. The sales guy kept pushing trying to get me to Buy this truck, and kept pushing all these great options like: Hey, look at this fancy tailgate, great stuff huh. When asked about the 5.3L Ecotech problems with lifter issues and such, all he could do was deflect, opened the back door of the truck and started harping on the great under seat storage. Was just too funny, I just let the fool keep up his BS, and of course walked away. I just wanted to look at the pretty truck, hee hee.
Of course, either wire in an isolator like Chopper said, or hit the disconnect switch on the panels. RAMS are STUPID Finicky about power issues, and back feeding into the electrics on yer RAM gonna cause U grief, just saying.