I usually bring along a splitter and hook that up to the cable TV port on the CAMP GROUND RV PEDESTAL with a short RG cable. Then I run a long RG cable from the splitter port to the trailer TV port. Then I throw a second RG cable from the other splitter port under the RV to hook up for outside TV usage...
All of this bypasses installed items inside the RV... Made it a simple hookup for me...
Roy Ken