Murf, Im surprised you fitted that plug on the rear in that position?
It is vulnerable when climbing the ladder, & also MIGHT let the ingress of water Etc inside eventually?
ALL electrical cables Etc that needed to go in /out from mine. I simply connected through the electrical box on the front of the trailer. Which was originally intended to allow Radio cables to go to Masts Etc. As you know, the lid of that Box has a folding rain shield. & this would have been much easier to do & was designed so that you didnt have to drill any further holes in the shelter body.
But hey! We are all wise after the event. Arent we?....🙄 I sold mine on a short while ago now, as my sleeping arrangements, & also vehicles have changed.
Still LOVE these trailers just as much though!