I am looking into changing my non xm antenna for the factory xm version. I can see the part number for the xm antenna. I do not see any unused connectors (I replaced the radio w/ an aftermarket /maestro setup)so I am assuming the antenna harness are different. But none of the harness descriptions say w/ or w/o satellite. Are the harnesses all the same, and I have a connector buried somewhere, or do i need to replace another harness well?