Central Locking Motor

[Titus A Duxass]

I've been given a central locking motor (Pt. Nr. 255 959 783 A) with the promise of the other 3.
Looking at it I can see both electrical and pneumatic connectors.

Is the system electrically actuated or pneumatically actuated?
Does the system have a central control unit (brain/black box)?

Which door does the above motor fit?

Cheers
TAD with cracked ribs in snowy Leipzig.

[tonytech]

Without checking the actuators on my doors I cant match the Numbers, but if it is OEM then the short tube at the bottom is just a drain for any water that gets in.
If it has 4 wires (a single and a block of 3) it should fit either of the front doors.
If it only has the 3 way block it will fit the tailgate or the slider.
My pbase photo account has wiring details http://www.pbase.com/tonytech/image/84733738
T

[Titus A Duxass]

Cheers Tony.
The wiring diagram is useful.

If I suck/blow through the tube the actuator actuates leading me to think that it has both options.