As other have said, your first problem is most likely the fact that you don't have a direct connection to the VIP211k or z receiver box (only these will work with a Tailgater). I have a Winegard Pathway X2 and it's the same way.
I suggest that you connect directly to the VIP211 box by running a cable in the window from the Tailgater, then you need an HDMI from the box to the TV, and see if you can get programming on your tv. This will tell you if the connections and cabling between the Tailgater and the receiver and the tv are correct. If not, then solve that problem first. You should also disconnect the existing cable that probably runs from your tv to a wall plate. AND you may have to tell your tv to look at a different input (HDMI ?). This is what I had to do.
Once you have programming, then you can address possible problem #2 - connect the Tailgater cable to one of your coach 'sat in' connections, re-connect the formerly disconnected interior cable to the VIP211 box and see if you still have programming. Some people have ended up running a new, direct, cable from the 'sat in' inlet to their receiver box, bypassing all switches, etc. These type of sat antennas don't tolerate switches, extra connections, etc very well.
