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Farmall & IHC Tractors Discussion Forum
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Switching negative ground back to positive

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BDM

06-17-2007 20:51:41




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SM setup with a 12v generator(not an alternator) with negative ground. Any reason I can't re-polarize the generator for positive ground?(I know I must re-wire a few things)




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BDM

06-18-2007 15:07:20




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 Re: Switching negative ground back to positive in reply to BDM, 06-17-2007 20:51:41  
It"s not marked, though I must admit. I can see a reason why that would matter? No semi-conductor. Just relay coils and one wire wound resistor. Nothing in there polarity sensitive I can see.



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Bob M

06-18-2007 06:54:00




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 Re: Switching negative ground back to positive in reply to BDM, 06-17-2007 20:51:41  
Like Gene says you can repolarize back to + ground IF the regulator is not marked "negative ground only", or such.

However from a practical standpoint, why change to + ground? Running + ground greatly increases the chances of an error and damage to your tractor (also damage to the jumping vehicle) should the tractor ever need to be jump started.

Also there's no performance benefit from positive ground other than it's "how it came from the factory". And your SM has already been converted from 6 to 12 volts the originality argument is pretty much moot anyway...

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gene bender

06-18-2007 03:05:59




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 Re: Switching negative ground back to positive in reply to BDM, 06-17-2007 20:51:41  
Better check your regulator as it probably is made for neg ground and going to pos ground will fry it.



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