On our '15 38RSSA we have a couple of vents in that general area in your picture. One of those vents on our trailer was a "cover" for the wire that runs down into the battery compartment. I'd say go up on the roof and open it up, that will for sure tell you one way or the other. FWIW, I had to "fish" with a piece for coat hanger wire for the solar prep wires!
You could also give DRV a call and ask them.
Dan
Thor Forums
