Direct TV requires a solid core coax cable from the dish to the main receiver. If you dont have the satellite hook up on the outside of the TT it wont work. Having just the cable hook up will not bring the signal in. You would have to run the wire in through a window or something. This is usually why there is a separate cable and satellite plug.
TT = 2014 Palomino Solaire Eclipse 318TSBHK
TV = 2014 Ram 2500 Big Horn 6.4L V8
Pit Crew: DW (Robin)
Kids: 3yo DD (Riley), another DD cookin (Kennedy)
Security: 5yo Boxer (Sasha), 14yo yorkie (Porter)...he was married in