[RayChez1]

I don't have the Siruis radio, but I do have the XM and what I done I glued the base plate on the top of the roof, right next to the radio antenna. I then removed the radio antenna on the drivers side and weaved the XM antenna wire down the side of the windshield on the inside panel to conceal the wiring. I then brought it up right on the dash where I wanted the radio to be mounted which was close to one of the cigarite lighter sockets. It works great and I can recieve satelite signal anywhere that I have being in this country. It was very easy to install, but I had to put the antenna on the outside because when I tried putting it on the dash I lost reception several times. Being outside it is exposed directly to the satelite with no interverance.
I also have two antennas on my coach. I know one is for the radio, but I really was not sure what the other was for.