The Replacement BC 30 Receiver Cable from Garmin can be used to power a GPS receiver and serve as a communication channel between a BC 30 Wireless Camera and Transmitter System and the GPS. The cable includes a vehicle traffic monitoring device which measures traffic congestion on your current route so you know not only where you're going, but also how long it will take to get there.
Measures and displays traffic levels on current route
Powers GPS unit via car adapter port
Receives camera transmitter signals for displaying camera footage on GPS unit