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Re: 1951 John Deere Model A Generator Issue


 
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Bob
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Joined: 03 Jan 1998
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PostPosted: Mon Jan 21, 2019 10:36 am    Post subject: Re: 1951 John Deere Model A Generator Issue Reply to specific post Reply with quote

Since you have a voltage regulator you don't need the "fld" wire to the light switch.

Leave regulator "FLD" connected to generator "F", and disconnect yellow wire, and tape it out of the way.

You COULD run a new, heavier wire from the "L" terminal to the terminal on the light switch that is now powered from the Ammeter, bu it's not really necessary. (Likely, the existing wire that was only intended to handle field current isn't heavy enough to to carry the lighting current.)

IMHO, the only reason to CONSIDER connecting the "L" wire to supply the light switch would be if you plan to run it for many hours at a time with the lights on.

As it left the factory, with a cutout, instead of a VR, the lights would have worked just fine wired as they are.
 
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Mike(NEOhio)
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Joined: 12 May 2013
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Location: Geauga County, Ohio

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PostPosted: Mon Jan 21, 2019 2:27 pm    Post subject: Re: 1951 John Deere Model A Generator Issue Reply to specific post Reply with quote

I think the later A came with a regulator. Maybe this will help.



 
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James Howell
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Joined: 06 Mar 2006
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Location: Omaha, TX

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PostPosted: Mon Jan 21, 2019 5:27 pm    Post subject: Re: 1951 John Deere Model A Generator Issue Reply to specific post Reply with quote

"Where did you connect L from the regulator?"

Reviewed the JOHN DEERE ELECTRICAL SYSTEMS SM-2029 in the Electrical Wiring section for the MODEL "A" TRACTORS (Serial No. 584000- ) Lamps and Wiring on page 80-5-3.

Take a look at the Instrument Panel and Generator Wiring diagram below.



Note the Black lead wire from the LIGHT SWITCH to the REGULATOR TERMINAL "L" on the generator.

Take a look at the photos below of "52" our 52 Model A.





Hope this helps.
 
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