03-04-2023, 02:32 PM
First thing to do is to check that the dynamo is charging. Connect the D and F terminals together and then connect them to a voltmeter with the other lead earthed. Use an analogue instrument, as the electronic sort don’t like the noise the ignition produces. Start the engine and note the voltage as you rev it up. It should rise to about 8 to 10 volts. If it does, then the problem will be it he cutout.check that the cutout is wired properly and is earthed. There is a recent thread concerning cutouts.