Got to work 15 mins early this morning so I decided to install this real quick. HA! (haven't drilled the hole yet, wire just comes out of the bottom of my dash) But it works great. I wound up getting one of these kits:
It has a mountable headphone jack input. I plan on drilling the hole in one of my extra toggle switch blanks-- next to my rear wiper switch. I'll move it later if I need to put a switch there.
I can't believe that I waited this long to do this mod. So tired of carrying CD's around... the 90's called and wants its media back.