Going to install Trav'ler on my gateway 3650fbh. Was told that the trailer was pre wired for roof satellite. I called heartland and they said that my model is not pre wired. So my question is, where do I run the 2 coax cables and the power chord cable. Without causing damage to my roof. I could plug one coax into the satellite prep outside but I need 2 to run my DVR. I can temp everything through a window but would like to make it look professional and hidden. Any tips and advice would be greatly appreciated.