Thanks Todd,
Yes, I also thought I wired it wrong, but it is in the right place. I will have another look. Maybe there is something else. GEN makes sense. Maybe I leave it disconnected until all other issues are fine.
Yes, you are right. Relais (relay) D is in place. It is a more modern (Bosch 6v) version. I was not sure about the original relay and its function. So I did make another setup.
And Yes, I use are push button to start. It is connected between relais D and Earth (Start knop = starter button). So there is a separate switch for ignition (ontsteking) which supplies all other systems thru relais (relay) C.
And Yes, I added a switchable 80 Amp security fuse in line 4 between amp meter and battery (accu)/starter solenoid.
BTW I rebuild that starter solenoid, using plastic to isolate, but now I does not work. (off couse it worked ok on the bench) . So that is my Saturday afternoon job.
You probably know this as well: I was frustrated because the petrol pump ( rebuild Wallbro with a replacement bellows), did not give any petrol. I took it off twice, checked all connections. Still not working. Took it off again. made a try out set up. It worked fine! Replaced it. Still no petrol. After all this work I had a brainwave and found that I had the petrol line connected to the vent on the tank and the petrol connection to a vent pipe. How simple can it be. I am still not sure if I should laugh or cry about it.
About the Wallbro (other post) : I got my replacements in the end. The work on the 3D printing continues. The materials seem all ok ( petrole and alcohol resistent), but the design is done again with a replacement as example. This design makes it difficult to print. The results are vulnerable because moving hard and the material is not flexible enough. Still trying.
If you or somebody is interested, I can attach the whole diagram. It is in Dutch, but you will probably understand it anyway.
Hartelijk bedankt en prettig weekeinde
Duco
The Netherlands