I have vstar 1100 and recently bought some bag supports off ebay. they didnt really have instructions but did have all the mounting hardware. Since i had a rear sissy bar and luggage rack, it had some hardware installed already.My holes aligned with the bolts going through the fender ok, i didnt have to drill anything. Hope you can make them work. I had a real bad experience with not useing the supports. My saddlebags rubbed the rear tire and cut a large hole in them. I was able to repair it using some info i found on a biker forum thankfully. i learned a hard lesson, i shouldnt have used the bags without the supports I guess, my right scraped the tire the most. The supports have eliminated the problem, hope yours work well.
Thanks for the reply. I found some instructions online for an 1100 that sort of made sense. I went ahead and tried that and it worked out. Actually pretty straightforward once I got started. Fortunately I had the necessary bolts to make it all work. The only thing was I couldn't reattach the passenger seat strap unless I ground down the little nub on the chrome attachments that lock it in place. I decided to leave the strap off instead.
One of the most important aspects of the installation is the correct installation of the spacers. These are avialable from True Value Hardware stores that contain nut and bolt sections or most hardware stores that have spacers and chrome sections. These spacers are different in size for the front and the rear and they make possible the use of the stock fender trim. Also attempt to put into the web search the various ways of stating the brand of bag and weather hard or soft bags and add the words installation and instructions.
I had spacers included in the bag of bolts but found they were not usable since the chrome fender trim and the backrest support frame are on the bike. The bolts provided were not long enough to use the spacers and based on how everything lined up, it looks right. I'll have to stop by the dealer and compare against another 650 Silverado if I don't find any instructions.