Direct TV wil not install a dish

A 500' roll of RG6 costs $35.00 at Home Depot. Obviously, the installer was not willing to try and pull a cable thru the RV walls, but we are talking about a 26 year old rig. So drill a hole through the wall and run the cable thru it. If you want to be fancy, spend another $10.00 and put a wall plate on the outside of the RV so the cable from the dish to the RV can be disconnected. Seal around the cable in the hole with some silicone. My guess is if you have the hole drilled and cable fished thru, the installer will be happy to put compression connectors onto the cable if you don't have that ability (or want to spend the 30 bucks for the proper tools.). The installer just doesn't want the liability of drilling that hole. Forget about the wiring that is already in place. It is 26 years old and no telling how many splitters are hidden in the line. This is a $25.00 (you don't need a 500 foot roll, a 50 foot piece would be $15 and overkill for what you need) and 30 minute project requiring only a 1/2 inch drill bit, some silicone sealer and very basic common sense (don't drill your hole thru a door, thru an electrical junction box etc).