Hello! We just brought our "new to us" 1998 Coleman Mesa home last week after searching for a few months. My dad and I went through the systems, everything seems to be solid & working well. I have been digging around the lights (trying to decide if I will swap to LED), and there is a "port" on the side of the interior dome lights. It has electricity running to it, but it isn't the usual "12V" port- it is the size of a tv "cable box" wire, but its empty (no pin, you can see into the interior of the light). I have done some searches and am coming up empty as far as what it would be for? Please help a newbie out... Thanks!