buy the 12v adapter plug from Triumph and install under seat at appropiate hole.You will need to purchase a bmw type plug adapter for that small socket but it is virtually vibration proof and waterproof.you can also purchase an adapter at your local bmw dealer to plug your battery tender into which includes a plug with clips..hence a power adapter for your gps,a jump start plug if your battery is in need of jump,and a stable plug in for your battery tender when needed...a total outlay of about 80 dollars!!You can purchase adapter plugs also at John Deere dealer as they use same plugs due to ability to function under extreme vibration.
