Original style New Tachometer Drive Generator (with or without add-on gearbox)

This is the correct original style Sprite mark 1 and 2 generator, equipped with the threads and output for a mechanical tach drive. Choose "generator only" to reuse your tach drive gearbox or "generator with tach drive gearbox" if you would like the add-on gearbox to spin your tachometer. 

This Generator / Dynamo can be used with a positive ground or a negative ground car.