No charge from 6 v dynamo.

[John Mason]

You can check your dynamo with nothing more than a 6 volt bulb. Connect a wire from a test bulb (use a spare headlamp bulb if you have one.) to a good earth and the other wire to the dynamo. I cannot recall which of the two connections on the top of the dynamo you connect to. No doubt somebody on the forum will know but I doubt if any damage will be caused if you connect to the wrong one while you do a quick test. If the dynamo is charging the bulb will light and get brighter as the revs are increased. Do not rev to high otherwise the bulb will glow really bright and burn out. Don’t ask how know.

John Mason