I'm thinking about getting a gps for a road trip I'm taking this summer (east coast) and I want to mount it in the cubby hole in front of the shifter. Is it possible to hardwire a nav unit? I've searched and all I see is radar hardwire. Also which gromet do people usually use when hardwiring? I see the one on the driver's side by the foot where the interior fuse box is. Also do I need to buy a fuse adapter thingy and which fuse slot would you use? Thanks.