Yesterday I made the connections in the steering wheel. Turning signal and horn. I also replaced the blinker relay with a new old style type. And it works perfect. So now all lamps works as they should. Headlights, parking lights, positioning lights, turning signal, brake lights, reverse light, instrument and clock lights and instrument control lights.
The only thing left to connect is the rooflight in front and rear, and the doorswitch. I have to made new cables for this. I hardly remember how this was connected, but I don't think this should be a problem. The car is now turning back to life these days! It is a great deal of fun for me, because when I bought the car nothing worked. This gives me a new energy to continue the restoration!
The Ponton page, http://www.mbzponton.org/ is very helpful in my work.