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John Deere Tractors Discussion Forum
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Re: JD60 Ballast Resistor

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Author  [Modern View]

01-03-2013 04:55:40

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Thanks everyone for the input. I bought this tractor in September 2012 and it had the 6V coil with the ballast resistor. I haven't had the flywheel cover off yet so I don't know if the starter has the terminal to shoot 12V directly to the coil or not. If not, I may get a switch with the side terminal keep the 6V coil and set it up for the 12V kick when starting.

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John T

01-03-2013 05:52:48

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 Re: JD60 Ballast Resistor in reply to gunther9, 01-03-2013 04:55:40  
That starter switch with the extra little terminal to send unballasted battery voltage to the coil ONLY WHILE CRANKING (ballast by pass system to improve cold weather starting) is a simple and easy fix if its not already so equipped. The wire goes from there to the coils high INPUT (from ballast and NOT to distributor) terminal.

CAUTION NOTE (a lot of laymen and rookies MISS this safety feature) on the 20 series tractors that used the ballast by pass system the ignition switch has an extra terminal Mag/Ground and it wires down to the coils low output (to distributor) terminal for safety BECAUSE without it when you step on the starter even if Ign is off, the engine ignition is HOTTTTTTTTTTT

Thats why on the 20 series theres 4 wires on the coil, 2 on input (from ballast and to startrer switch), 2 on output (1 to distributor one to ign switch Mag/Ground)

John T

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01-03-2013 06:04:11

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 Re: JD60 Ballast Resistor in reply to John T, 01-03-2013 05:52:48  
That is an excellent point. Thank you.

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John T

01-03-2013 06:37:40

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 Re: JD60 Ballast Resistor in reply to gunther9, 01-03-2013 06:04:11  
Youre welcome, it could save someones life even, yet many many gents out there arent aware of the safety problem nor aware how to fix it!!

John T

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