My R25/2 restoration - few question

[Heiko]

The reverse current switch on the top of the regulator. If there would be the advance unit you will have a completely other problem. 

[Heiko]

[Al Capone]

As Heiko advised, I checked all the connections in my generator according to the diagram. The entire generator was disassembled and thoroughly checked. The connections are correct but I have a few doubts. I checked the continuity of the coil connection. When measuring from the carbon brush + (D+?) to the wire at the regulator (DF?), there is continuity. When I check the additional wire of coil no. 1 (resistor?) marked in red in the diagram, there is no continuity to any other wire. Should it be like that?


How was the connection marked in blue in the diagram made and what is it for?