[BB_TX]

We have the Tailgater and it works great. Just connect it, turn on power to the sat box and TV, select your current location, and wait 10 minutes or so and it will automatically find the satellites. On occasion I do have to recycle power if it does not find them the first time.
As far as the connections, the coax has to go direct from the Tailgater to the Dish VIP211k satellite receiver box. (it must be a 211 receiver). It can go thru the trailer wiring as long as it goes straight to the box and not thru some intermediate device.
On my trailer I only had one external coax connector and had a dual coax plate below the TV with a jumper coax between the two connectors on the dual plate. One of the connectors came from the external coax connector. By removing the jumper and connecting another coax cable from that plate to the sat box it connected the Tailgater directly to the sat box and it worked fine. However the jumper was needed if I wanted to connect to park cable. So to simplify things I added a second external coax specifically for the sat connection to the sat box and leave the jumper in place in case I want park cable. I ran an HDMI cable from the sat box to the TV for HD TV. And I ran an audio cable from the TV audio out to the sound system audio in.
If you have a single external coax connector (in the convenience center) then yours is probably wired the same way. If you have two external coax connectors then I would assume one is already set up for satellite.
As far as location of the sat box, mine was pretty easy. There is a cabinet below my TV where I could locate mine. Fortunately the same cabinet where the dual coax plate is located. I did add an upper shelf to set the sat box on. Don't know how your cabinetry is designed, but ideally you would locate the sat box near the TV both for connections and for remote control.
Since the Tailgater is a single receiver you cannot get two separate channels on the two TVs. But you can get the same channel on the second TV as on the first. In my case the second coax on the dual coax plate went to the antenna switch/amp plate in the bedroom. By connecting the coax output from the sat box to the second coax on the dual coax plate it sent the Dish signal to the bedroom TV so we could at least watch TV there also. We typically turn off the living room TV about 10 pm and retire to the bedroom to watch the 10 o'clock news and weather.