My '86 had two (2), one on each bag lid, nylon straps that could snap/fasten to the lid to keep the lid from falling down when opened. The other end was fastened to the body of the bag. They were held in place by snaps and could be removed. Mine over the years had broken at the snap portion mounted to the bag lid. While not a big deal, it was sure nice not to have to worry about stuff spilling out of the bag when opened.
I fashinoed two (2) "straps" for each bag, one on either side, by using electrical wire ring terminals crimped and soldered on to #16 stranded electrical wire ( more flexible). After drilling out the stock pop rivets holding the snaps base, I re-installed a new pop rivet with a backing washer on the outside of the bag. Getting the correct measurement for the wire ( too long and bag lid hits hot muffler; too short and the opening isn't enough to add/remove items) takes a bit of doing; and you lose the ability to remove the "straps" or disconnect them. Probably, the better solution would have been to have new nylon straps made and replace the snaps and bases (pop rivets again), but this is what I did for now. I haven't thrown the old straps away in case I don't like the current set up.
Probably just created a "rainey day/winter " project.
Ride safe all,