I had XM installed in my last 24' MH. We tried the antenna on the dash near the windshield and it got blocked when traveling in a northerly direction. We then tried temporarily attaching it inside the roof of the overhang. That didn't work well either. Finally we ran the wire outside the window and up to the roof to test it. That worked. We then ran the wire thru a marker light and into the cab. The headliner might have to be removed to run the wire down a column to your dashboard. I would recommend connected it more permanently than using a cigarette lighter outlet. The wires with a cell phone and a gps unit will get to be a pain after a while. Satellite radio is well worth the time and effort to install correctly.
In my second Class C, the existing radio was broken. I bought a new radio that was ready to hook up satellite, had bluetooth for my phone, played DVD's , CD's and hooked up to a rear view camera.
I used the sat antenna that was already installed. My installer found the the MH was wired for a camera. It works very well. It is easy to use. It was worth the cost. Good luck.
