Hi all,
Thanks a lot for your useful advice, but I still owe the end of this dread. I installed the BTH ignition, I mounted the ignition coils in the battery box and the CDI box on the frame. I mounted the Battery in the Toolbox (a little but strong Hawker 6 Volt Battery). I used the existing ignition-gear and blocked his automatic adjustment. Everything was easy and everything works OK.
Greetings Peter