to test coils all you do is Ron a charge through them if they magnetized they're good if they heat up their bad the high-tension coil that goes to the spark plug can be checked by putting your negative of a 9-volt battery to the frame of the bike and hitting the positive on the trigger circuit that's the terminal that goes into the box now which side up do you have do you have a two coil system without points or do you have a CDI which would be for coils?