A:Answerthis just comes with the normal round connection used on most car gps units. I'm not familiar with the garmin xtrex vista hcx. don't know if this is helpful at all, sorry and hope it helps.
A:AnswerYes! This mount has the simple ball/neck that snaps on the back of the Garmin. Just gently push the ball into the receiver on the back of the Garmin and you are ready to go. Good luck!
A:AnswerI use it on a Garmin 2798 with no problems. I keep it on the left corner of the windshield on the dash. Because the 7 inch GPS is so large it blocks less of me vision in this spot. Have not had any problem with slipping or turning over in my RAV4.
