Hi all. I'm about to receive an XM unit (portable one, not a new head unit) as a gift. I've seen a few threads about mounting the antenna but nothing about the install of the unit itself. How will I go about getting the sound from the unit to come through my stock Bose speakers without using one of those crappy FM transmitters? Is this an install I can do myself (not an electrical genius, here)? I'm kind of leery of letting some "electronics giant" hack go poking around in there.