Yesterday, I succeeded in spinning the rear wheel with magnetic forces. In my last post here, I reported detecting some voltage in the battery pack. I hooked up the batteries to a solar panel and left it connected for three weeks. I got the batteries almost fully charged. I repaired the broken wires to the throttle potentiometer. This required excavating the broken wires from an epoxy resin glob near the twistgrip before I cold splince onto the severed pairs. I was planning to bypass the key operated master electrical service switch since the bike was missing it. I decided to try some old keys I had saved and found one that worked. It was an old toyota key. I cleaned up electrical connections and installed the battery pack. I first tried applying power with the rear wheel lifted off the ground. Instant success!! Then I tried moving the bike under its own power while walking along side, limited success. The batteries rapidly discharged so I didn't get to actually ride it. Now that I know it works I'll started looking for replacement batteries. The voltmeter on the dash still works and so do the running lights.