Each saddle bag has a box and the TP has a box, I would guess they are what control the locks.
These are the motors that turn the locking mechanism. The current to all 4 locking motors must come from a single relay that is activated by the signal sent from the remote key or from the switch on the dash. Based on my testing with the key transmitter, the receiver for this relay must be somewhere in the ride side of the fairing. I don't think its in the side panel as my very limited distance remote will not function past the seat on the right side of the bike and will not function at all on the left side of the tank.
It appears to only operate the locks when placed anywhere across the front of the fairing within 1 ft or down the right side of the bike as far as about 2 feet to the right and behind the ignition switch.
This make the remote lock somewhat useless as it will not function when approaching the saddlebags/TP from the rear. I may as well just skip using the remote and use the dash switch if it can only be used from 1 ft away from the front of the bike. Clearly its not working as designed and it appears to be either interference with the transmission receiver or a weak/poor receiver.