I am trying to install the wired backup camera and "Smart" rear view mirror in my son's Disco II. I understand all the connections but routing the camera wiring through the flexible door wire protector...well the wiring doesn't seem to go into the hollow area where the tail light wiring is like I thought it would. Anybody know where the wire goes from there and how best to get another wire through? Oh, I mounted the "cube" backup camera on the underside of the back door handle/license plate light. Routing the wire through the door to the hinge side of door and going into the frame is where I get lost.