Originally Posted by RockHaulerLarry
If it is fiberglass, just place it close to the roof on the inside of the camper. The antenna will get the signal through fiberglass. This what I did in my semi.
RockHauler is correct. The SXM signal will pass through fiberglass with no problem. Just make sure that there is no metal or wiring above that location.
Basically it needs a clear line of sight above you. The top of the vehicle is always best but SXM is fairly strong and you will get a good signal where you are planning to install it.
Once you install it have it activated and remember to leave it on while waiting for the activation signal.