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John Deere Tractors Discussion Forum
Show Parts for Model:

Re: JD60 Ballast Resistor

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Tom 43

01-02-2013 10:38:31
70.128.115.57



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The JD A and the first number series which includes the 60 DON"T have a ballast resistor as delivered from the factory. Both the A and 60 us a true 12 volt coil. There may have been later service bulletins converting the 60 to a bypass ignition system as on the 520 and 620 etc. Conversion would entail a resistor, a 6 volt coil, a diffrent starter switch, and a bypass wire from the starter switch to the negative side of the coil.

If a ballast is used on a 60, you must also have a 6 volt coil otherwise you will have weak spark.

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4010 puller

01-02-2013 15:50:42
70.199.119.68



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 Re: JD60 Ballast Resistor in reply to Tom 43, 01-02-2013 10:38:31  
So If you have a 60 with a 12 volt battery, you want to run wire from switch through a resister and into a 6 volt coil? What if you buy a coil with a resister built in? You would want a 6 volt coil with internal resister and that would work fine as well?



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John T

01-02-2013 19:25:51
216.249.82.117



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 Re: JD60 Ballast Resistor in reply to 4010 puller, 01-02-2013 15:50:42  
4010:

YOUR QUESTION: So If you have a 60 with a 12 volt battery, you want to run wire from switch through a resister and into a 6 volt coil?

ANSWER: You could if you like!!!!!!! or else simpler to just use a 12 volt coil that way you dont have the wiring worry and extra connections and expense of a then un needed ballast!!!

YOUR QUESTION: If you buy a coil with a resister built in? You would want a 6 volt coil with internal resister and that would work fine as well?

ANSWER: SEE MY POST ABOVE, YOURE NOT GONNA FIND A COIL THAT HAS A STAND ALONE DISCRETE RESISTOR TUCKED AWAY SOMEWHERE INSIDE THE CAN

HOWEVER, You CAN FIND a "12 volt" coil orrrrrrrrr a coil labeled "12 volts NOT for use with ballast" orrrrr a coil labeled "12 volts NO ballast required" AND GUESS WHAT they are engineered and designed to operate at 12 volts nominal and like they say NO BALLAST REQUIRED

ALSO you can buy a coil labeled "6 volts" orrrrrrrr "12 volts FOR USE WITH ballast resistor" orrrrrr "12 volts requires ballast" AND GUESS WHAT!!! THOSE ARE ALL IN REALITY 6 VOLT COILS

SOOOOOOO on a 12 volt tractor you can use EITHER

a) A 12 volt coil

orrrrrrrrrrrrrrrrrrrrrrr

b) A 6 volt coil PLUSSSSSSS an external series voltage dropping (12 to 6) ballast resistor

Get it???? Its NOT really rocket science, post back any questions, hope this answers your great questions

best wishes and God Bless

John T

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gunther9

01-02-2013 15:13:10
72.14.16.178



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 Re: JD60 Ballast Resistor in reply to Tom 43, 01-02-2013 10:38:31  
It had a 6V coil with a ballast resistor mounted to the coil. Ugly. I don't know how it came from the factory. It's a later model 60 #6061643 so I assumed it was built with a 6V/ballast setup but I'm not sure.



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John T

01-02-2013 19:30:01
216.249.82.117



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 Re: JD60 Ballast Resistor in reply to gunther9, 01-02-2013 15:13:10  
Usually (like on the later 620) the ballast was mounted on the back of the steering pedestal, NOT on the coil HOWEVER in all my years of used tractor dealership I SAW ABOUT EVERYTHING LOL

NOTE; A reason for using the 6 volt coil on a 12 volt tractor was to improve cold weather starting, but the tractor had to have the ballast by pass circuit/system to make that work ya know !!!!!!!! The later 620 etc had such

Hope this helps, best wishes n God Bless, fun discussion

John T

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Bob Harvey

01-02-2013 19:13:38
209.121.225.136



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 Re: JD60 Ballast Resistor in reply to gunther9, 01-02-2013 15:13:10  
Nope, I have #6015864 - NO ballast resistor - 12v. When I got it in 1971 it was Neg. grnd, -still is.



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Bob Harvey

01-02-2013 19:22:04
209.121.225.136



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 Re: JD60 Ballast Resistor in reply to Bob Harvey, 01-02-2013 19:13:38  
Oops, #6015867 - like it makes a huge diff. <;*)



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