Jeff929 - - You didn't tell what you had - - Siris or XM - - But if you go to the Web under XM you should find everything you need. I have three XM's and the ones in the trucks are hard wired into the system and use an antenna switching unit hooked to the FM radio in the trucks. In the trailer (RV type) I use a XM Express with a mobile mount kit, and have it hooked to the AM/FM radio built into the trailer. The XM Express has both mobile mounts and home mounts and a boom box to use as a portable battery operated radio, so it is pretty versatile. The other option is to buy a unit for the truck, and put it on the same account as the first one, and it will be added in the family plan which is something like $6. 95 a month, then you wont have to move the radio. I think once you get used to having XM you won't want to be with out it. I am a news junky, so I have it on FOX or CNN Headline most of the time - - then go to Bill Mack on 171 and Truckin' Bozo in the afternoons. Never have to change stations - - - ever!
Try this - - - Just type this into your search engine XM Radio and you will find all kinds of stuff.
Denny