I'm going in for my 3000 miles checkup. I'm going to have the shop adjust my side bag latch, but I read several posting of people asking how to adjust the latch cable. I have not done it but I know the cable is like Bike brake cable adjustment. I watched a Revzilla video on how to add reflective lights on side bag. In that video I saw the latch adjustment for the cable just behind the latch handle.
I just checked, you have access to the cable adjustment from under the bag. Fixed mine in 2 minutes. My cable was set to long, I just adjusted the length from under the bag .. just look up, loosen the locking nut and turn and test and turn until it works. Interesting fact if you bag is locked and you didn't have your key, did you know you can open the bag by pulling the cable latch by reaching up behind the latch. Interesting the locked side bag could be a place for a spare key