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Farmall & IHC Tractors Discussion Forum
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A light switch

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holcombwa

09-06-2005 10:45:57




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Disassembled the light switch on my "A" this morning and after a fair amount of head scratching and much diagraming: figured out how it worked..... Except for the little round mystery box under the low charge resister. When on high charge, it seems like the resistor is still hooked up. Unless, when on high charge the mystery box has an internal switch of some sort that closes and allows a more direct path to ground. Anyone know what is happening in the light switch to change the charge rate from high to low? (I've got a four wire regulator so won't be using the switch for that function, but would like to know anyway). Oh, also, don't have a fuse on the ignition switch presently and wondered if it could be ran though the fuse for the lights. All help is appreciated.
Stan

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gene b

09-06-2005 10:53:41




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 Re: A light switch in reply to holcombwa, 09-06-2005 10:45:57  
Check your generator to see if the third brush is adjustable to regulate the out-put. I f there is a slotted screw head on the brush end that screw can be loosened and that brush holder will move. You dont want it any closer to the brush on the top than 3.5 bars. Moving the gap wider will decrease the amperage out-put. Like you said you will not connect the wire coming from the generator field.

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gene b

09-06-2005 10:53:18




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 Re: A light switch in reply to holcombwa, 09-06-2005 10:45:57  
Check your generator to see if the third brush is adjustable to regulate the out-put. I f there is a slotted screw head on the brush end that screw can be loosened and that brush holder will move. You dont want it any closer to the brush on the top than 3.5 bars. Moving the gap wider will decrease the amperage out-put. Like you said you will not connect the wire coming from the generator field.

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