My car's head unit has one 3.5mm aux input jack, which I currently use for my Sirius Sportster radio. I just bought a portable GPS/mp3 unit that I'd like to have share that same aux input. That way I don't have to keep moving the aux cable back and forth between the two units depending on which device I'm using at that moment. Is that even possible? I've been told I need a mixer, but most I see out there have an AC power adapter. I was hoping someone here may have a trick up their sleeve... surely I'm not the first to attempt this ;-)
Thx!
