I have. I removed the outside round coax jack. The cable can be seen by removing the drawers on the left side of the stove. I bored a hole in the side of the kitchen cabinet bottom that also entered the entertainment area. I removed the radio and could reached the hole that I had made in the cabinets, fishing a long HDMI cable through the round hole behind the tv and through the holes I bored. Note: both holes I bored are just big enough for the HDMI cable and are not seen.
I ordered THIS
(painted it black) and THIS
Enlarge your old coax hole to accommodate the new jack. It should cover the round hole. Connect your wires and screw in place.
BTW, you can order a second outlet cover and replace the plastic one that came with the trailer.