Garmin eMap GPS unit.

My setup includes:

Garmin eMap GPS unit with 8mb memory stick
Pro-Fit mounting bracket #TY-70-96
Garmin Automotive Windshield Mounting Bracket #010-10262-00 (mounted to pro-fit)
Garmin Cigarette lighter adapter #010-10203-00 (hard wired in)
Titan III Universal Active GPS Antenna (external)
Garmin MapSource Roads & Rec
Garmin MapSource Topo
Garmin MapSource Metro Guide
Garmin MapSource World Map