Check coil unhooked with 9 volt battery, connect - battery to ground,+ to + on coil. touch on + = spark. make sure stator/coil grounds are good. to remove the magneto cover use a piston stop. On the cable, measure square drive on speedometer cable and screw size's on cable, Huret's are bad from grease gumming up meter and drive, replacements and entire systems are available from Treatland and Moped Division. Only electrics in speedometer is a light on some.