We just purchased a new 2019 Coachman Mirada 350s. We bought a new Dish satellite, and I hooked it to the outside coax hookup in the wet well. I then hooked the walley up in the cabinet over the walk in door to the only coax coming in there which was marked satellite. No signal. If I bring the coax through the door and hook it up direct it works fine. I was told there was a coax access panel over the passenger seat. I found that and revealed a cobweb of unmarked coax. Some hooked to splitters and some not. I looked for some kind of switch from cable/ air or satellite and found none. The only thing I see is an orange taped coax which is screwed together and there are 2 open terminals on the bottom of one of the splitters. Anybody have any ideas? I asked the dealer for a schematic and he said they have none. Please help.Thanks