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John Deere Tractors Discussion Forum
:

jd 730D elect start battery wireing

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kurt v

07-11-2019 11:53:36




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Instead of 4 6v batteries I have 2 12v, pos to starter and neg to solenoid , if I ground the middle pos post I have a short what am I doing wrong? Can someone show me the right setup.
Put a new wiring in, new switch everything worked good except the inner set of lights , had batteries hooked up pos post to starter and grd then through batteries to neg solenoid. Talked to john at brillman and he said I need to grd off the middle pos post when I do that I get a short. A pic of the correct battery wiring with 2 12 bats would help.
thanks kurt

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Bob

07-13-2019 10:55:40




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 Re: jd 730D elect start battery wireing in reply to kurt v, 07-11-2019 11:53:36  
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I never looked closely at that area of the diagram, possibly fuel gauge, fuel sender, and indicator light?



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kurt v

07-13-2019 10:24:36




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 Re: jd 730D elect start battery wireing in reply to kurt v, 07-11-2019 11:53:36  
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got continuity in volt reg on arm and field, getting new volt reg.



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Tx Jim

07-12-2019 03:48:27




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 Re: jd 730D elect start battery wireing in reply to kurt v, 07-11-2019 11:53:36  
Bob

That's a very good wiring diagram. What are these ground symbols in wiring diagram for or to?
Thanks,Jim

Has 24 volt starter been checked for brush dust accumulation?



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Bob

07-11-2019 22:37:53




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 Re: jd 730D elect start battery wireing in reply to kurt v, 07-11-2019 11:53:36  
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Kurt, keep after this, you'll figure it out!

It's a unique system, but a good one, and can be made to work again, just like it did when it left the factory.

(Don't believe all the "naysayers" that simply haven't taken the time and effort to study it out!)



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kurt v

07-11-2019 17:31:18




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 Re: jd 730D elect start battery wireing in reply to kurt v, 07-11-2019 11:53:36  
Mr Bob, gen ,solenoid, starter 24vol, don't know about VR, is unmarked but larger than normal vr,( inside looks like new). Will go over wiring tomorrow , brillman harness and diagram is real good ,I must have crossed something.

thanks kurt



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AJB-830

07-11-2019 18:54:13




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 Re: jd 730D elect start battery wireing in reply to kurt v, 07-11-2019 17:31:18  
I have been running two 12-volt batteries in my JD 830 for the last 30 years. I just have the ground wire connected to the battery cable strap that connects the two batteries together. Doesn't matter which battery post you connect it to. If all the wiring is original to when four 6-volt batteries were used, it should work fine. But if you put in new cables or other wiring, probably will have to check your wiring against an original wiring diagram. And yes, the original VR on the 24-volt JD is larger than what you normally see on other tractors. Al

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Bob

07-11-2019 12:42:23




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 Re: jd 730D elect start battery wireing in reply to kurt v, 07-11-2019 11:53:36  
Kurt, are you using the original (or exact replacement) starter, starter solenoid, generator, and voltage regulator?

All these are "special" for this unique 24 Volt system.

With the batteries and each component totally disconnected, there must be NO continuity from ANY terminal on the starter, generator, or voltage regulator to that component's metal "housing".

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