1952 Massey Harris 30: 6-Volt to 12-Volt Negative Ground Conversion
I converted my 1952 Massey Harris 30 from 6-volt positive ground to 12-volt negative ground using a one-wire 63-amp Delco 10SI off a squarebody Chevy. Here is what I used, how I mounted and aligned it, why the pulley size mattered, and how the tractor starts now.
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