does it say "DP" on it? for DishPro
yes you just plug it into the imput port on the Twin you have and hoseclamp it
it goes as shown in the picture...so if you are behind the dish looking at it (as it shows in the pic) its to the LEFT...that would be 129. When using multiple satellites they get set up opposite of how they are in the sky (due to the bounce off the dish)