I have a 50 amp 12 volt generator from a late 50s White which I'm considering using on the 55 GMC 630. I found it interesting that in checking Delco generator numbers in my late 50s Motors truck manual, they listed both + and - ground generators with the same part number. For example 1106822 was offered in both polarities. What would have been the difference? Did they "pre-polarize" them, but no other differences?
