Calling WyoDave - converting 6 to 12 Volt

• Independent Ignition

the above will cure problems with the average older tractor. after 40-60 year the cables corrode inside, at the ends etc. Rust devlops under the ground connection and seems like somebody has replaced heavy cables for 6volt with lightweight 12 volt cables.

6 volts works fine IF repaired back to original (new) working condition

IF you still want to change then the starter stays the same, the dynamo(generator) needs rewound or replaced with an alternator and the voltage regulator needs replaced along with all light bulbs and a ballast resistor (60-70's Chrylser auto) needs installed before the coil
Good luck
ron

I've also heard that you can use the generator by adjusting the voltage regulator but have never seen this work corectly. A single wire alternator with internal regulator is the easiest as alternative to one with an external voltage regulator.

Also you need to switch the ground from positive ground (standard on most 6 volt systems) to negitive ground (standard on almost all 12 volt systems).

As a quick change you could just swap the battery and coil (or add a balance resistor) and charge the battery when it gets low. If your just doing parades/show this may be all you need. It won't hurt the generator or electrical system but will burn out the 6 volt bulbs fast. just make sure the coil is installed correctly - plus side of the coil makes it's way to the plus side of the battery. This is what determins positive ground or negitive ground. If the (-) side of the coil is attached to the points in the distribuitor you have negitive ground - if the (+) side of the coil is attached to the points in the distribuitor you have positive ground.