Hello, I got a Dkw Rt 175 Bj 1955 from an acquaintance and wanted to make it run again. Life of the machine about 30 years. Now first problem the ignition lock can be turned off so no resistance and also no spark so I think ignition lock defective. Can someone tell me which cables I have to merge so that the ignition is on and I can check if there is a spark or if there are still problems at the ignition. Greetings Andreas