Hello - newbie here. I have an 03 Aviator and I'm looking to direct connect satellite radio (not factory, no SAT button on 03's) via AUX inputs. I have the rear DVD system, and I know about the inputs that drop down there for add-on devices (used it already for the PS2), but I'm wondering about behind the head unit. Is there another set? I have the 6-disc in-dash unit. Any info is appreciated. Thanks!