KONKIN BOO Compatible DC Adapter Replacement for Garmin StreetPilot C320 C310 C330 C340 Street Pilot GPS Cradle - Walmart.com
Amazon.com: Digipartspower Car DC Adapter For Garmin StreetPilot C310 C320 C330 C340 Street Pilot GPS Cradle Auto Vehicle Boat Cigarette Lighter(Note: This Car DC Adapter Plugs into Garmin GPS Cradle NOT USB