Just finished modifying the electric starter on my MK3. Four field coils & brushes plus ball bearings on the armature. Installed it along with a new starter relay & heavy wires for the starter. Seems to work very good then something really strange happened. The engine would not shut off. Switched it off at the handlebar and even turned off the electrical system with the key. It still continued to run. So I pulled the sparkplug leads and it stopped but then I realized that the starter was still turning the engine over. I had to disconnect the lead on the starter to get it to stop cranking the engine. My guess is that the new relay or the start switch hung up. I was wondering if any of you folks had ever experienced such a thing? My electrical diagram is in bad shape and not real clear so I was wonder in if any of you folks could look at a MK3 wiring diagram and see if voltage is fed to the ignition system when the start relay is engaged………even with all other switches in the off position?