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1940's Farmall H - Replacing Light Switch
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Posted by Brian on May 19, 2004 at 09:23:29 from (69.81.89.152):
I am restoring my father's late 40's Farmall H and I need to replace the light switch. The old switch operates the generator and the lights. The IH replacement is just a light switch. The dealer did not have a service update on how to wire the generator to function properly, i.e. high and low charge, only that they sometimes put a resistor in the generator circuit in line with the GEN F terminal. Does anyone have a service update or details on rewiring and splitting the generator circuit out from the original to operate with the replacement light switch? I have a 6V system with a cutout. I have replaced all the wiring and had the generator rebuilt, and polarized, and cutout checked. I can obtain full generator output by "shorting" the Gen F terminal to the chassis, but I don't know what components and values the original switch had. (I have verifed the wiring with the stock H 6 volt generator w/cutout relay/distributor ignition and it matches, but the unit did charge with the old switch.)
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