CTEK
Perfect!  I mounted this to the dash of my 2010 Polaris 800 RZRs just to the left of the steering wheel.  Plenty of cable to reach the battery and be tucked away under the paneling.  Since the battery is mounted under the seat and on it's side attaching the battery tender can be a chore.  With this adapter it is quick and easy to hook up the CTEK tender to the RZR and walk away.  I love it.