12 volt square coil.

Frankmn · Jul 11, 2011

So, For some reason, I bypassed the second resistor and ran my old coil that way, just to get it to start after it got wet. Well, I forgot I did that and ran it until it got hot and died. Now, I went and bought a new 12 volt square coil. Do I still need that second resistor or can I eliminate it. The tractor runs poorly when the resistor is in place, but I don't want to repeat my last mistake, so I have not run it without it yet. Anyone have an answer? I always see Dell making sure about the first (ballast?) resistor so I thought I better check. It is a 12 volt conversion that was done by a previous owner.

souNdguy · Jul 11, 2011

the square 12v coils -usually- work fine with the oem ballast resister.

soudnguy

Dell (WA) · Jul 12, 2011

Frank.......why do you think you need a 12-to-6V converting resistor to run yer new 12V squarecan ignition coil??? Do you know what happens when you run 12V bulbs with 6V??? weak lites, eh? Same with yer new modern 12V squarecan coil, weak sparkies on 6V. Isn't that amazing???

Do you know what happens to yer original 6V squarecan coil when you by-pass the 12-to-6V converting resistor??? IT MELTS the insulative tars and quits running. Isn't that amazing???

Remember BOTH the original 6V squarecan coil and the modern 12V squarecan coil NEED the "infamous ballast resistor. NO ARGUE!!! ........Dell, yer self-appointed sparkie-meister

Frankmn · Jul 12, 2011

Until recently, I always thought the second resistor was a ballast resistor. It looks just like a ballast resistor on an old ford or mopar ignition system. I didn't do the conversion, so I did not know.Thanks for the advice. Now I am off to install my new radiator to replace the one that was destroyed by neglecting the old water pump for just a little to long

JMOR · Jul 12, 2011

(quoted from post at 07:14:09 07/12/11) Until recently, I always thought the second resistor was a ballast resistor. It looks just like a ballast resistor on an old ford or mopar ignition system. I didn't do the conversion, so I did not know.Thanks for the advice. Now I am off to install my new radiator to replace the one that was destroyed by neglecting the old water pump for just a little to long

" It looks just like a ballast resistor on an old ford or mopar ignition system." Very well could have had a Ford or Chrysler part number & was used as a ballast resistor in those cars & many others as well. It is just words. They are all resistors, given the name 'ballast'. 'converting', dropping', etc. based upon application. "Voltage converting", however, is a bad name in my mind, as no resistor actually "converts" a voltage, it simply 'resists' current flow & in doing so results in a voltage drop across the resistance...in this case a drop from 12 to 6. You could put both resistors in a box, in series, and call the 'box' your "ballast resistance" if you so desire...after all the combined resistance is the "stabilizing element" or "ballast" used to "stabilize the current in the coil circuit. So......no apology necessary.

12 volt square coil.

Frankmn

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souNdguy

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Dell (WA)

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Frankmn

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JMOR

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