All I can tell you is that it came from the factory with two wires. Who absconded with the other wire, I don't know. Anyhow, in order to install it you have to pull the flywheel, then remove the magneto from the motor and turn it (the magneto) upside down for access to the screws and clamps on the bottom. You also have to remove one of the coils. The wires go to the breaker points, just like the diagram says. The wires are not common wire, they have fine copper strands for flexibility. But I suppose common wire will work for awhile.
