Ya, I use to do this all the time in my cars when I was younger. 2 ford escorts ('99) and a dodge intrepid ('00). I did it for my Sirius Sat radio, but that was when it was straight 12v. It was alot easier, blus they used the barrel style plug. NOW, this GPS thing im not sure about cuz its not a barrel or usb style plug. Its some 18pin connector. Just trying to see if anyone has every ripped one apart.