Hello , I was very impressed by the reply I got from Zak, it explained things in a way easy to understand , and was exactly the advice required , as Zak suggested I connected multimeter set at v ac to black and grey leads from magneto , pulled starting rope several times , meter did flicker up many volts , but not convinced I tried holding leads in my hand an pulling rope as fast as possible ,but absolutely no shock , tried connecting leads to low wattage 12 volt bulb , again absolutely no flicker of light , I am thinking I may require one of your magneto units , Again thanks for very helpful advice .