The cruise actuator is located under the dash and presses directly on the pedal. It's controlled by a module located inside the left fender.
m guessing that you are missing the changeover valve. If yours is a 94 it may not have the wastegate opener setup on it. I've even seen some early models (93-94) that don't have a K03 turbo. Some use a K14 that does not have any provision for pulling the wastegate open with vacuum.
I would like to find one of these turbo's for my 1.9TD. I think it presents the best compromise between quick spooling and high boost/flow efficiency.
Outside of VVG/VNT, you mean?
I would go with the K14. If you don't use it, and are interested in selling I'm fairly local... If you happen to stumble across a few inexpensive VNT15's in your travels I'm also interested.
I think they could be "perverted" to operate from boost pressure rather than vacuum.