And then, finally I was able to sort out the cabling and connect all the wires to instruments and lamps.
A true puzzle, using the wiring diagram I have labeled all the wires, which was quite a drudgery.
but finally I was able to find all the wires
and could start the large installation
In the engine compartment, I installed an electric vacuum pump (which was removed later due to the 200DI engine) and a thermostatic switch for the electric fan.
And then the big puzzle of the dashboard was still at issue
Which ultimately succeeded without any left overs;-)