If your's is set up like my 36RL, there is a jack marked satellite in the compartment where your water connection and dump valves are. Hook the cable from your dish to this jack. Behind the TV there is a jack that should also be marked satellite. A cable goes from this jack to your satellite receiver. I than ran a HDMI cable from the receiver to the tv. You can use one of the other cable connections from the receiver to the tv, but the HDMI is supposed to give the best picture. To watch satellite, set the input on the tv to whatever type connection you are using. If you don't have the satellite connections you would have to start from scratch, but I think most of the units are coming with this almost standar.
Roger & Cheryl Full Time since 2002, RVing since 1975 2008 Chevy 3500 Crew Cab Dually, 2012 RW 36RL