I recently hardwired my Vr3 back up cam to my overhead console and loved the idea of not having the wire plugged into my cigarette adapter. So, I decided to also hardwire my tom tom navigation the same way. I cut the wire open to find 3 wires in the power adapter, a white,red and black. I called my local car audio store and asked cause I was not sure about the white wire and was told to run constant power all I would need was the red and black. So I wired it up plugged it in then, POOF! After quickly disconnecting it I noticed next to the inlet for the plug it reads 5v WHOOPS. I guess I am poop outta luck due to own stupidity. Lesson learned.?