I just got finished installing a Garmin Nuvi 500 on my 2012 Backcountry and thought I'd share some pics for others to see. I used a RAM mount and a RAM cradle and I mounted them to the riser block. I used a piece of 1/8" thick aluminum stock and drilled holes for the mounting screws to create a back plate. I like the position it puts the GPS in because it's centered and easy to glance down to view when I need to and it doesn't obstruct the view of my gauges. Most importantly, it's protected from any rollover situations which is important for those off-trail days.
I installed the 12v accessory outlet and use a 12v adapter to power the GPS. Unfortunately, I didn't know until AFTER that power isn't provided at idle. I might buy a hardwire adapter and run it directly to the battery or some other ignition switched circuit. Any suggestions?
OK, here's some pics of the installation.





Here's a picture of the Digital Multi-function gauge I just installed as well (with the help of my local dealer, who did the programming). Worth the investment, in my opinion.