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Fordson Tractors Discussion Forum

Re: Fordson Major diesel -12 volt -positive or negative earth

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Rolls

11-24-2012 12:25:32
124.181.25.200



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Thanks Mike.

I have the diagram,but this is also saying it is a positive earth. I"m not sure if my battery is connected correctly (negative earth) but it will start with a jump start. Could this do damage starting it connected to negative earth ?


Cheers
Rolls




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Robert major

11-24-2012 21:56:41
216.81.3.132



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 Re: Fordson Major diesel -12 volt -positive or negative earth in reply to Rolls, 11-24-2012 12:25:32  
Hi when the tractor was new it was positive earth, Many have been messed with over the years and changed negative. it will not hurt the starter the other way round. all you have to do is re wire the system and polarize the dynamo the correct way for what you choose . If you fit an alternator instead like common off the shelf G.M.C internal regulator type , you will have to go neg earth to get it to work. when your done mark the way earth is under the hood so the next guy knows, I have a few here I have bought, with mangled terminals and got to check the wiring to find out what they are wired.
Regards Robert

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Rolls

11-26-2012 00:42:14
143.238.120.46



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 Re: Fordson Major diesel -12 volt -positive or negative earth in reply to Robert major, 11-24-2012 21:56:41  
Hi Robert.

Thanks for the advice,as far as I can find out it is should be positive earth. When I get a chance in the next week or so, I will swap the terminals back to positive earth and see how it goes.

Thanks again.
Rolls.



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