German engineering and Yorkshire stubborness all the way!
After another break from working on Helga I finally got back in the hut.
A new wireing harness has been made and fitted, that was where the fun started.
The red wire from the alternator is definately the kill switch, that I do know.
That left the blue and yellow wires. After a little time sorting I now have lights but no horn,
A new horn has arrived from India (don't ask!) and that's next on the list to fit after a trip to France.