accuator

[cuttiepie911]

what is, where is, and how do repair or change a drivers side door accuator

[RX-7_TWINTURBO]

it's the part that powers your door locks.
it would be located inside your door, connected to your lock.
the one currently in your door will probably be riveted inside the door so you will have to drill the rivets out and replace them with short nuts and bolts or thick rivets.

replacing parts inside a door is frustrating and difficult..i would pay a mechanic to do it