Pull the tank pad back, left side . Reach up above the battery, the rod is just inside the frame rail. Pull toward the rear to release the latch.
If it's disconnected or not there, with your right hand index finger, reach forward and up toward the gas tank. Feel around for the latch lever (where the rod would connect) and pull toward the rear. Once you get the seat off, it will be easy to see what needs fixin.