I did it - the "passthrough" connector I used has a rubber cover just like the factory uses for the cable hookup. I installed mine straight through to where the entertainement center is so there was no line to run in the walls. It was very simple once you get over the shock of standing in front of your RV with a BIG drill in your hand !! I also added a phone jack. Our TT is a 2000 so it didn't have all the amenities that are available today. I added some electrical outlets where they are standard now.
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