A small update:
Work has began. Im not a car electric expert, but some knowledge I have. I assume its ok to remove the old generator regulator.
There is a black/yellow wire (orange/green arrow - same wire) from the regulator to the starter solenoid, its connected to same location as the red wire from the alternator (yellow arrows). Can this be disconnected from the solenoid?
Another wire, the yellow/black has the same route, this is for the charging warning light, so it will be connected to the alternator
My plan is to loosen the three screws on the regulator, disconnect the wires. The insulate the metalconnectors on the wires and "hide" them in the engine bay
Non of the electric components are dependent on the old regulator?
The last picture is of the waterpump pulley. Does the rows look ok? That pulley, and the crankpulley was sandblasted some years ago. Then painted black, except the rows
These pictures are big, tried to make them more fitted for using here, but its still best to open them in a new tab