I wasn`t sure what the terminal on the magneto was, now I understand how the engine cuts out with this conected to the button.Next onto the dynamo, there is no movement on the ammeter, when the lights are switched on, I expected a discharge to be shown.I haven`t measured the voltage out of the dynamo as yet, should be tomorrow.I repolarised it and then ran it with the two terminals connected to the battery +ve and case to earth not very fast but it ran.