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Harry Ferguson Tractors Discussion Forum
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Author  [Modern View]

11-29-2013 22:52:10

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do these 12 volt tractors need a resistor? mine keeps burning up points.

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12-01-2013 15:50:31

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 Re: resistor in reply to 1948jr, 11-29-2013 22:52:10  
Switch it off, remove the cap and see if power is still going to points.

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11-30-2013 08:01:02

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 Re: resistor in reply to 1948jr, 11-29-2013 22:52:10  
Both mine, one with points, one with Pertronix electronic kit, use coils with internal resistor. I've had no problems with either.

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Jason S.

11-30-2013 05:52:34

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 Re: resistor in reply to 1948jr, 11-29-2013 22:52:10  
The points do not care if it's 6 or 12 volts. Only the coil cares about the voltage and needs a resistor if it's not a true 12 volt coil. Where are you getting your points from?

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11-30-2013 05:14:26

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 Re: resistor in reply to 1948jr, 11-29-2013 22:52:10  
My Cadse 300 was converted to 12 volt when I got it in 1994. I had some problems with points and such. Finally I installed an internal resistor 12 volt coil - 15 years later I still have no complaints. I just did the same to my TO030 -ditched the external resistor - got a new one with internal resistor and it runs great.

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Joe Scribner

11-30-2013 02:47:37

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 Re: resistor in reply to 1948jr, 11-29-2013 22:52:10  
My 54 Te-a20 kept burning points too. Tried new coil with correct resistance, new condensers, new points, could not get the points to last more than maybe twenty hours tops. I finally installed a Pertronix unit and have had no problem at all in over a year. It starts better and idles smoother and has more grunt than ever before. I just don't believe you can buy superior quality points anymore. Just my two cents. Joe

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Charles in Aus.

11-30-2013 01:06:33

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 Re: resistor in reply to maxwell99, 11-29-2013 22:52:10  
You could try changing the condenser.

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11-30-2013 01:17:50

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 Re: resistor in reply to Charles in Aus., 11-30-2013 01:06:33  
I just converted my TO 35 to 12v neg from 6v pos. I used a 12v chevy coil that had a built in rester in it and so far haven"t had a problem. Only ran it for maybe 2 hr"s though.

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11-30-2013 05:19:35

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 Re: resistor in reply to rondean, 11-30-2013 01:17:50  
if points are bad will it pop and back fire

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12-02-2013 05:20:54

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 Re: resistor in reply to 1948jr, 11-30-2013 05:19:35  
Backfire and popping is usually related to trash in fuel or carb problems, but I suppose a bad condensor or pitted points or a partially grounded hot wire would cause a sputter.

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