Hi folks. I wanted to ask about charging my Garmin DriveSmart through the usb of my car radio. I did find a very old 2008 thread about this and the general consensus seemed to be that this should be doable.\n\nI can't remember what my radio is right now but it's a brand new one with a usb port.\n\nWhen I plugged my Garmin into the usb port of radio yesterday, the satnav screen went almost totally blank, although I could very faintly see that the charging icon was showing. The Garmin wouldn't come back on at all - not with touch screen or power button. And the header unit display switched over to show usb connection.\n\nCould anyone suggest what might be happening? From what I've read, the usb port on the header unit 'should' be powered, so there should be no reason why it shouldn't be able to power the Garmin.