Hi, Brian. I think its not a good idea to use some non waterproof GPS navigators. Try to use this https://www.prolech.net/pro_show.asp?id=911&cpic=1
For mounting use this https://www.buybits.com/Product/6311/Sw-motech-Yamaha-Fjr1300-06-Onwards-Cockpit-Mount-Gps-06-497-10000b-sku-6311.aspx...
