I'm not familiar with the "D", but I assume it's the same as the "E".

Do you now have central locking?
That is, does locking your driver's door...locks the rest of the doors, as well as the trunk & gas flap?

If it does, than you have all the actuators, all you need to just hook it up & don't need anything else.

__________________
85' 190E w/collector plates