I Need help for my VW Golf Mk2 "10 Millionen Edition"

I'm an italian owner of a 3-doors VW Golf Mk2 1988 "10 Millionen Edition" - 1.6 Turbodiesel, 51 kW (70 PS), engine code: JR, and I'm looking for the complete engine&electric diagrams/charts of this specific model.

Here in Italy I tried so hard to find all this information, but unfortunately It seems that no-one -even the authorized VW dealer's mechanics- still own it.
Could you help-me?

You know... I really love my car and now I have to set her up a little bit (repairing and substituting some parts, of course)!

Hoping you could help me,
Thanks