The foot start switch for 12 volt applications (55-62) has a small side terminal that bypasses the ballast resistor during starting. Rock Auto has those switches in stock and they're a bolt-on replacement on the 6V starter, which can still be used when the 12V conversion is done.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!