With our super light AC Alternator conversion kits all Lucas dynamos can be replaced. You can benefit from the following improvements: Since the Superlight Alternator is lighter it uses less motor energy and provides you with more power for the road. Half the weight, twice the power! The original look of your classic car is untouched, our product looks like the old Lucas, just hidden inside is the up-to-date high tec. Even your old regulator remains in the car, so the update is not visible. Remove your old dynamo and take of the pulley, spacers and washers and fit them on the alternator. In some cases you need to drill out the pulley with a 17 mm drill. Ensure that the pulley is gripped between the nut head and the spacer. Tighten the nut by holding the flats on the shaft end, never insert anything into the commutator.