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Originally Posted by 1957plymouthhemi
"....i'm an old fart, but i worked on a lot of those in the 60s-70s. DISCLIMER: i'm digging this out of my distant memory in a foggy part of my brain......"
Me too 
Your explanation sounds right from what I remember. And yes I remember them, never read them just knew you had to do it. Even remember why. A generator is self energizing, but relies on a slight magnetic field in the housing to get started. Polarizing sets up that field.
A few years ago I was doing a fair amount of work on old Harleys had a couple brought in by guys who had changed their generators but still wouldn’t charge. I polarized them and cured the problem. They were pretty amazed about what could be done with a jumper wire  |
hey 1957 plymouth hemi, your brain isn't to foggy. you are exactly right.
AND i had a couple of those old generator harleys, one had that BIG delco-remy regulater and one had that little squre bosch regulater.