Good Morning! I am the proud new owner of a 2005 31PC. The head unit on the stereo is inop so this is first on my list of upgrades. I chose a Fusion RA-70 and I am also upgrading the factory amp. I noticed that there is a Sirius antenna on the radar arch but as of yet can not find where it connects to anything or where the end of the cable is stashed. There was no sirius tuner that i can see hooked to the factory head unit. Has anyone been here and what did you find?