Well I just got done installing the Quick release backrest on my 2012 Vaquero. The directions made it sound harder than it was. From start to finish maybe an hour and a 1/2 including running to the hardware store for a hole saw for my drill. There are 2 things that I want to pass along;
1) A 1" hole saw that they recommend was in my opinion to large of a hole for the spacer. I would have liked the next size down. Keep that in mind when you are gonna install one of these backrests. You may want to opt for a 7/8 holesaw instead.
2) When putting the mounting plates on the bike for the QR backrest, remember the long bolts and spacers go up front and the short bolts and spacers go in back. If you get this reversed the arms on the backrest and the mounts will not line up.
So that's it, it was a very simple install but the directions were as clear as mud. Have fun and ride safe everyone