In our Columbia is a the standard Freightliner radio/cd player. Supposed to be satelite ready. Noty sure if it's Sirius or XM. Also what do I need to do to make it work? I have XM in other vechiles through Pioneer modulators, but prefer to go through main radio and not have extra unit on dash. Last but not least, small gutter mount antena or go for the big mirror mount. Kinda looks cool. THANK YOU
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