[Purdy Swoft]

No modifications are needed for an original model A generator to run 12 volts . I'm running mine 12 volt positive ground and no wires need to be changed. The original style wiring harnesses work perfectly The only thing needed is a twelve volt battery and either a ballast resister at the coil or replace the coil with a 3.0 OHM coil. An original cutout will work but you won't have voltage regulation . I run the can style voltage regulator from Fun projects that takes the place of the cut out. These regulators can be had in either positive or negative ground . The model A generator will charge whatever battery that it is connected to up to probably 40 volts. The original style 20 amp ammeter works great, You can use the 35 watt halogen bulbs that fit the original sockets or the original style 12 volt bulbs that most vendors sell. The model A generator won't put out enough amps to use the 60-55 watt quartz halogen bulbs unless you can locate a 60 amp armature for the generator. With this setup, you get all of the advantages of 12 volt without the higher amps of a 60 amp alternator. Lower amps are easier on the generator and wiring and runs cool. The starter spins just as fast as any 12 volt system and I didn't need to modify the starter. If you ever wanted to go back to 6 volts the biggest thing would be installing a 6 volt battery and either removing the ballast at the coil or if you had installed a 3.0 ohm coil you would need to reinstall the original style coil and bulbs . If you've got a good original generator, a 12 volt upgrade is one of the simplest conversions that I know of .