Originally Posted by Donkey Hotey
No point in posting the diagram. You've isolated the problem.
When you shorted across the terminals, did you get a big spark and did the screwdriver want to stick to the screws or just a weak spark?
Pretty strong spark. Also a bit of a click somewhere.
An interesting note, when swapping batteries I wanted to check the ground wire once the battery was removed. When I touched the ground nut to loosen it, the ratchet extension must have touched the positive cable and there was a little spark- with no battery in the bike! Is there power stored in a generator or somewhere?