Bob I like what you did.
BFL13, the shore line is already hard wired into the EMS system. But you give me an idea. What if I leave the original inlet receptacle there (pass thru) and cut the cord and put a female plug on the part that comes from the 5er and a male plug on the shore cord or vise versa and plug em together and just push the female plug back in the inlet and close the door when not in use or in motion. You think that would work. When both are hooked together it could be just inside the door to keep it from getting wet. Hope I explained it right.