Cruise Control Installation: Audi 80 TDI 90PS

Hello, I've already activated the cruise control in my A3 TDI. It involved quite a bit of wiring work; it was much easier on my Golf III because the wiring harness is already pre-wired there.

Can this also be done on a 1994 Audi 80 TDI?

Does anyone have circuit diagrams or schematics?

I have a diagnostic tool.

I guess you have the same engine in the Audi 80 and the Golf (1Z?), so the 'cruise control' system must be built in a similar way as well.
I installed it myself in my Passat 35i (also known as the 'B4'), and it was just as difficult as installing it in a Golf III. The biggest difficulty, in my opinion, was finding the cable behind the fuse box .

It's specifically about the cables that I'm concerned with.
For the A3, I even had to remove the windshield wiper motor, but I had a diagram and wiring schematic that showed which cables were which.
For the Volkswagen Golf II manufactured from 1996 onwards, the wiring for the cruise control connector is already pre-wired up to the steering column (connector with four pins).

I now need a wiring diagram or description for the Audi 80, manufactured in 1994. As I know from experience with Volkswagen and Audi, there are significant differences between the Golf, Audi, and even within different production years.

Sure, here's the translation:

'It should actually be called a Golf III!'