help needed on remote locking

[Quinsta]

From your description (and after converting my 86 Laser to central locking) i would say that the lock for the door is not connected electrically either by the way of the plug or maybe the drivers door lock is separately fused. If the unit is run off the alarm system then reprogramming wont work as the rest of the doors work.. so maybe pull the door skin off and check the wiring..!! hope its something easy.. HTH..