I'm kind of confused by the original post but the answer to what you're asking may be:
If you have the style of bags as shown in your photo AND the bags have the latches that attach them to the frame at the rear of the bike/bag, then they should have the locking mechanism---on the early style bag, the small rectangular "flap" on the saddlebag latch lifts up to reveal a key slot underneath it.
If you don't have that key, there will be a 3-digit number on the lock.....the needed key number can then usually be obtained from one source or another.
Eddie