I've been using a Garmin Zumo 660 for about 8 years now. Had a mount for it on the dash in the RZR 800, but don't want to do that to the General.
I had noted the "pocket" in the dash above the switch panel and figured that would be a good place to mount the Zumo...but how? Looking on Garmin's website they now make a "hard wired" mount for the Zumo. Got that. Gads, it comes with four cables. One for power, one for headset, one for microphone, one a mini-USB. I only need the power cable, but have to deal with the 1" x 1/2" fitting where the cables split.
So I sat down and designed a plate that would cover the "pocket" in the dash...so that all the extra cables could be wadded up in the pocket. A rectangular opening to pass the cord, and a 3/8" steel block to offset the GPS mount as its thicker at the bottom where the cable is attached.
I cut the two pieces on my PlasmaCam. Took a couple tries to get the size just right to fit over the "pocket" opening. Here's a SnagIt clip of the cut pieces:
The plate fits right against the plastic face of the pocket. So after getting all the wiring and testing completed, I put dots of black RTV on the pocket face and set the plate in place and pressed it against the face of the pocket spreading the RTV and I hope making for a good adhesion.
Here's the mount final mounted in place:
And here's another view showing the location of in reference to the dash switch console:
And last, here's pic of the GPS in place, powered up, and ready to go!!
Pirate