I rebuilt my entire dash board to get the GPS up higher. removed the factory radio, made a bracket and bezel for it, and mounted it down low and put the backup camera screen in a "drawer".....
Also added new XM Radio receiver in a quick removable bracket that I can now move to the trailer or put on the motorcycle.
The wireless camera that came with the Garmin GPS went inside the trailer to watch the cargo (motorcycle)
The illuminated switch is to turn the camera off as needed
The XM antenna is a magnetic mount that I placed on the roof, next to the new marine AM/FM antenna I installed. All on a powder coated piece of steel
BTW...HUGE improvement of my AM/FM/ Weather Band reception with this new antenna. I was going to replace the radio as I thought it was junk. The factory antenna was junk. The radio is actually VERY good!