Australian made 12v 14A Alternator Autolite replica Only 2 moving parts Built in solid state regulator. Works with Ammeter (upto 47) or Charging light (a charging lamp driver is provided for 1948 up models (see NCLS) No modification required bolts straight into existing generator holder. Fits all Chiefs Scouts with upper primary Belt Drive, nominally 1936 up Chiefs plus 1931 101 Scouts.