Well, I've had this Modifry GPS Dash Mount Plate for a while now.

Never put it on because I wanted it to be a "wired" solution for my Nuvi 660 so I wouldn't have the chord stretching across the center console.

I was also able to have it powder coated a textured red so it looked a little more like my red interior while I was powder coating my Intake Manifold (see the post in the New England Group if interested in that)
Powder Coated Intake Manifold

 

Just bought the nuvi 650 (ordered the mount and nuvi ball from modifry) and would like it to be hard wired. How difficult is it to do? Do you mind sending instructions, please??