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Subject: 8n electrical short

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Henry    Posted 04-20-2019 at 14:38:08 [URL] [DELETE]        [Reply] [Email]  
  • 8n electrical short
  • I have a 52 8N that has ongoing electrical problems. Problems started after we converted to 12 volt. We have a side distributor. Tractor starts fine bu first problems were intermittant arching at the solenoid while running. Later we could hear the battery hiss and the starter motor whinning slowly even with the key off. I later replaced the battery and relanded all wiring and removed the stray 6 volt wiring. It started fine but when I turned the ignition key on....sparks were flying at the ignition key. Could this be shorted wiring where a mouse chewed the insulation....if so - should i replace all wiring as the next step? If not....other advice?

    Ultradog MN    Posted 05-16-2019 at 04:13:56 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8n electrical short
  • Meh.
    6V vs 12V?
    Marry Ann or Ginger?
    Why does this still come up all the time?

    Jack - Iowa    Posted 05-05-2019 at 22:13:22 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8n electrical short
  • Henry,

    You would have a better chance of getting responses if you posted this under the
    N Board forum.

    Jack - Iowa    Posted 05-05-2019 at 19:28:00 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8n electrical short
  • Henry,

    Personally I see no reason to convert one of these tractors to 12 volt unless you have 12 volt equipment, such as a pump, hoist or other to operate. They were designed to operate with the 6 volt positive ground electrical setup.

    That said, perhaps you need to relate in detail just what you did in performing this conversion.

    You speak of stray 6 volt wiring. I don't understand what you have done that you have stray wiring.

    Obviously something is wired incorrectly or you would not have sparks flying.

    Since you had no problems on 6 volt, I would discount the mouse possibility.

    Good Luck,


    steveVa    Posted 05-05-2019 at 03:14:54 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8n electrical short
  • I have never done a conversion from positive ground to negative ground, but I would think that the selonoid would need to be swapped. Your starter switch grounds the selonoid to the frame. Your coil would also be wired opposite I believe.

    Bob in KS    Posted 05-14-2019 at 09:01:05 [URL] [DELETE]        [Reply] [Email]  
  • Re: 8n electrical short
  • Solenoid will pull in the same with either polarity, the starter will rotate the same either polarity. With positive ground + coil post goes to side of distributor, with negative ground the -- post goes to side of distributor.

    Uniformity with other modern 12 volt negative ground systems, greater reliability of alternator / internal regulator over generator and mechanical regulator, less confusion with battery charging or jump start are some of the reasons I, personally, prefer an alternator and negative ground system

    Jim Lawrence    Posted 04-20-2019 at 14:53:16 [URL] [DELETE]        [Reply] [Email]  
  • Re: 8n electrical short
  • I have a 52' also. Mine is still 6 volt, and no problems. Hmmmm?
    I suspect your conversion is the problem, probably mismatch items, wiring, etc.
    I have never seen a good reason to convert to 12V, as the 6V system works so very well and was the intended system for the tractors.
    Suspect you need to start through your entire system tracing all.


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