I've been using on of these modules for quite a while. Works for closing only. It's triggered by either locking the car with the remote or pressing the central locking button in the ICC.
http://www.rapidelectronics.com.au/products/4-door-window-lift.html
Vid-
They aren't water proof though, so if you plan to mount in the door seal it first or do as I did and seal it up in a plastic bag.