I am new to the forum and this is my first post. I have a 06 X3 with satellite radio prep ($75 option). I purchased a plug & play XM kit from Bavarian Soundwerks. I wnated to know if I can place unit & connect in the rear left side space? There is a black velcro bundel of wires. I noticed one is a blue connector for the antena. Can I just plug in there without pulling the radio? Can I use the shark fin antena or do I need to use small unit in the kit?

Thanks
Mark