Jphn Deere M

Does anyone know the wire gauge sizes for rewiring a 1948 M. I have the wiring diagram but im not sure of the sizes. I would like to make my own harnass as the new ones are $209. Any help is appreciated. Thanks
 
If you search down in the deere section you should find the wire sizes for a JD B as I asked about it a few years ago. They would be the same gauges as you need. good luck.
 
I dont know what sizes Deere originally used, but can tell you what will "work"

Id use insulated stranded copper wire, of course, in these gauges.

Id use 12 for the charging circuit, ARM on Genny to GEN/ARM side of Cutout Relay,,,,,,Bat from relay to Ammeter load side,,,,,,,,Ammeter Supply side to where big cable attaches to starter post.

Id use 14 gauge for all the rest (Ignition and lights etc) except battery and Ground cables, of course, where Id use 0 or 1 gauge.

It wont hurt if you used 12 everywhere even though 14 would suffice for ignition and lights etc

John T
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