How to Convert a Ferguson To30 6 Volt to a 12 Volt

Updated February 21, 2017

Converting your Ferguson To30 from a 6 volt to 12 volt electrical system is an upgrade that improves the performance of your tractor. A 6 volt regulator converted to a 12 volt alternator adds turn over power for starting in cold and freezing temperatures. Additionally, an alternator has the capacity to recharge a battery when the Ferguson's engine speed is low or idling. Your To30's lights also shines brighter with double the voltage feeding them. The 12 volt systems also have the benefit of conversion, which is an industry standard.

Lift the C clamp of the negative battery cable off the negative terminal after untreading the bolt that tightens the clamp. Remove the positive cable next. Pull the battery cage off the mount after unthreading its wingnuts. Take the 6 volt battery off the mount. Grind the mount from the tractor's engine bay. Weld the 12 volt mount in its place.

Unthread the nut affixing the positive battery cable to the generator as well as the bolt wiring the generator to the regulator. Unbolt the generator from its mount and grind the mount from the engine bay. Weld the 12 volt alternator/regulator mount where the generator mount was seated. Unbolt the 6 volt regulator, remove the wire affixing it to the coil and pull it off the mount. Grind the 6 volt regulator mount off of the frame of the tractor. Bolt the alternator/generator to the mount.

Connect the wire running from the coil to the alternator by threading a nut to the alternator terminal after you have slipped the coil wire over the alternator terminal. Attach the battery cable to the alternator using the same method. Attach the positive battery cable to the battery's positive terminal.

Unseat the light casings by removing the screws affixing them to the light housings. Remove the bulbs by pressing in on them and twisting 1/4 turn. Unscrew the 6 volt light assemblies from the light housings and replace them with 12 volt assemblies, then screw in the 12 volt bulbs and reseat the light covers. Remove the 6 volt fuses from the fuse box and replace them with 12 volt fuses.

Connect the ground cable to the negative terminal on the battery.

Things You'll Need

  • Socket set
  • Wrench set
  • Grinder
  • Welder
  • 12 volt alternator with regulator
  • 12 volt alternator mount
  • 12 volt light bulbs
  • 12 volt light assemblies
  • 12 volt battery
  • 12 volt battery mount
  • 12 volt fuses
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