Farmall Cub

What's necessary to convert electrical system from 6 volt to 12 volt . And which parts are used, and parts aren't in the conversion Can you jump start the system with a 12 volt battery I'm starting a Cub that hasn't run in over 3 years

Larry, basically you'll need a 12 volt generator / voltage regulator or an alternator. Also a ballast resistor for the ignition coil plus 12 volt light bulbs for the lights. You can keep the 6 volt starter. Just remember not to crank the engine for long periods. If you use an alternator, you will need a load to excite the alternator - usually a small light bulb. You might want to view some of the conversion diagrams at the link:

http://albums.photo.epson.com/j/AlbumIndex?u=4001561&a=30065733&f=0

Larry:

To add what BigDog said, go to the manual server and under Maintenance Tips and Techniques is JD's article 12 Volt Conversion with a Hitachi 14231 Alternator.

Complete guide to conversion.

My question as usual is why? 6 volt system works great. Or is it the cost? Are you needing to have the generator, mag or cut-out replaced or rebuilt? As I continue with Jethro's restore, I am changing him back from the 12 volt conversion to the 6 volt original. Yust me dos centavos....

Bigdog,
You mentioned a ballast resistor for the six volt coil. Is this just to keep the old coil in place and save $$$? Or, is there a specific reason for leaving the 6V coil? I put a 12V coil on my '49 and did away with the ballast resistor. Been running good. So far!!

Either way will work. If the existing coil is good, the ballast resistor is a cheap alternative to buying a new 12 volt coil.