12 Volt Conversion diagram

[vicory]

My father-in-law has an M series John Deere which apparently some time ago was converted to a 12 Volt using a Delco alternator. However, the wiring has mostly been removed and I'm trying to re-wire. Would anyone happen to have a diagram?

 

[beenthere]

I'm thinking you are talking of the 2-cyl upright, early 1950's M (later became the 40, then 420 and 430) ?

I used to have a service manual, but let it go with the 420 when I sold it. Maybe someone will have the layout for the conversion (mine was still the 6v system).