On our Landmark, there are paired coax connectors in the universal docking center, above the water connections. One pair for the living room satellite connect, and another pair for the bedroom. The right-hand connector of each pair goes to the roof and the left-hand of each to the living room or bedroom. You have to put a jumper across each pair to complete the connection.
In our case, since we use a freestanding dish, we just run coax wires from the dish to the left-hand connectors.