I was thinking about installing a 7in tablet to replace the head unit, have it plugged in like route the power cable behind the dash to the cigarette lighter so I can possibly charge things with a car charger at the same time as charging the tablet or will that be overloading the cig lighter? Anyway, I need some help on figuring out a mounting system that is as clean as possible and holds the tablet very sturdily. I want to use it as my GPS, radio, MP3 player, movie player, etc. I will also have a cable run out through the glove box or something so I can add things to it like transfer movies and songs through a usb drive or something like that. The tablet I have in mind is the Galaxy Tab T849, I am more worried about the mounting rather than the wiring because worst case I just run the cable from behind the dash and stick out into the car charger if I can't wire it up to the wires directly. Also would it be possible to have it turn on with the ignition instead of having to manually turn it on and off?