30-06-2022, 03:59 PM
Yes, that's a 1929-32 DEL dynamo, which has an internal resistor for the half-charge circuit. If you have this wired in to the standard Ruby wiring loom which is designed for the C35A and C35M dynamo, then you also have a half-charge resistor in the cut-out/fuse unit. This may be of help:
http://www.da7c.co.uk/technical_torque_a...ynamos.htm
http://www.da7c.co.uk/technical_torque_a...ynamos.htm