Looking to install sattelite radio on the wives 06 expy limited. Has the RSE and the SAT button, but no antenna, and says SAT not avail when pushed. I realize I need a receiver and antenna to make work, but does anyone know where I can get the factory items from? Not looking to go aftermarket just yet. Will eventually, but would love to have the factory antenna. And if I do happen to aquire said antenna, how does one go about installing it? Thanks in advanced.