Garmin 12/24-Volt Auto Adapter with External Speaker for GPS Units

Garmin 12/24-Volt Auto Adapter with External Speaker for GPS Units This accessory is a replacement for the 12/24-volt adapter cable with external speaker that came with your StreetPilot. It allows you to power your unit off the vehicle's battery and hear the voice prompts. So if you need a new one, don't delay. You'll be lost without it.