We are asked pretty frequently about how to convert a tractor from 6 volt to 12 volt. There are any number of reasons why customers want to do the conversion and a debate always arises over whether you should convert or not. Whether you choose to stick with the original charging system and repair or replace your components or you choose to convert to a newer style charging system, Steiner Tractor Parts can supply many of the parts necessary for the job.
Inexperienced mechanics and tractor hobbyists sometimes have issues with the conversion. If this is your first time converting from 6 volt to 12 volt, you may want to seek out a qualified mechanic or a tractor enthusiast with more experience. These components can be pricey and incorrect wiring or procedure can ruin some of the electrical parts, increasing the costs for the job.
We have a few helpful documents on our website to assist with your conversion.
Farmall H, Super H, 300, 350 – Here are instructions for converting these tractors using our alternator bracket kit, IHS1246. These instructions also provide a useful framework for the steps to take to convert many different models with slight variations.
Many models can use our 63 Amp One Wire Alternator with Pulley for converting from 6 volt to 12 volt. Our part number on this alternator is ABC418. We provide some useful installation instructions for this alternator as well as some tips about mounting the alternator.
You may also find it useful when considering converting from 6 volt to 12 volt, to read our document about switching the polarity on your tractor from positive to negative ground.
If you decide that conversion isn’t for you and you want to repair an existing generator, check out this bulletin from Delco-Remy regarding service and maintenance of their generators.
Bob Horne says
What Delco alternator is your ABC418?
Thank you
Bob
Suzette Thomas says
Hello,
This is a 10SI series alternator.
Sincerely,
Jr. Roberts
Mike says
If I convert the 6volt generator to a 12 volt generator on a farmall cub will I need to replace the voltage regulator and will I have to use different points
Lisa Warren says
You will not use the voltage regulator once it has been switched to 12 volts – https://www.steinertractor.com/ABC3551Mini-35-Amp-12-V-Negative-Ground-Alternator-with-Pulley has a built in regulator. The points do not need to be changed.
Ed Dedman says
How about the ignition coil and starter? Starter solenoid?
Suzette Thomas says
Ed you will have to add a resistor ABC366 or update your system with a 12 volt internally resisted coil ABC509.
Terry says
Have a 1948 B Tractor, it’s showing 2 negitives and not cranking. new points and new coil.2 negitives and 1 positives.