I just got a 2007 Mazda 3 sport and am looking at adding Sirius radio. I have all the hookups from my current setup that was in my old car and want to know if this will work in my 3. I am not sure what Sirius module I have, but it is on that has connects directly to my Kenwood headunit via a CD changer wire. Is this going to work work with a stock HU, or is the kit you get from Mazda have different connectors to the radio? Any help would be appreciated.