The Garmin Montana and Zumo series GPS run on 12VDC power and utilize cradles that are wired directly to the battery. We have found this to be a pain in butt since the cradle can't be removed easily. Our solution was to cut in a weatherproof plug/socket assembly so the cradle can be disconnected easily. Here's the setup for the Montana on our KTM 990 Adventure: Power is one of our Baryl Panel Mount sockets on the top of the dash. The Baryl Plug was cut into the Garmin power cable downstream of the "Y" so the audio cable was preserved. You can see the audio cable tucked in between the cradle and the top of the speedo. The mount is a custom design that uses a bicycle wheel skewer for easy removal and tilt adjustment. Here's the Zumo 450/550 setup on my Harley Davidson Road King. It uses one of our weatherproof Baryl Universal Mount attached to the bars. This was our first GPS power set up and was driven by a bad experience on the road when I had my Zumo mount stolen overnight. It was bad enough loosing the cradle but what was worse is not having my GPS for the rest of the ride. Now I can remove the cradle easily and take into our hotel room at night.