Ignition Coils, Still Confused?

Posted by BlueLight on November 03, 2000 at 14:19:19 from (216.208.109.123):

The Article Archive on this board explains
the ignition coil workings quite well.
I just returned from my UAP store and the guy says he has 12V coils that require a ballast resistor and 12V ones that don't (built in ballast).
In the conversion discussions on this board, it states that the ballast resistor is used to drop the voltage in order to keep the 6V coil.
So why do the 12V coils need a ballast anyway.?
All very confusing.
Let me describe my situation now. I don't
have a charging system on my tractor. I have a
wire that runs directly from my 12V battery to
the coil, no external ballast. The tractor starts fast and runs great.
Can I deduce from this that I have a 12V coil?.
Can it be a 6V coil, or would that have burned
out from the start using my battery.?
Since my coil works, can I be assured that it
meets the stated requirments of between 2.7 and
3.3 ohms.? (trying to save buying ohmeter)
Right now I am ready to convert. The S10 alternator is mounted and it has poles 1,2 & BAT
as required. Can I use existing coil as is?
Any help is appreciated.

Follow Ups:

• Re: Ignition Coils, Still Confused? Gregory J. Howell 17:39:02 07/07/02 (0)
• Re: Ignition Coils, Still Confused? 80 Grit 16:29:09 11/06/00 (0)
• Re: Ignition Coils, Still Confused? Jim WI 10:34:32 11/06/00 (0)
• Re: Ignition Coils, Still Confused? Dean 07:50:04 11/04/00 (0)
• Re: Ignition Coils, Still Confused? Pappy 21:21:13 11/03/00 (0)
• Re: Ignition Coils, Still Confused? Jon Hagen 19:21:18 11/03/00 (0)
• Re: Ignition Coils, Still Confused? larry 16:21:23 11/03/00 (0)
• Re: Ignition Coils, Still Confused? Ken McWilliams 15:56:55 11/03/00 (7)
  • Re: Re: Ignition Coils, Still Confused? ltf in nc 16:11:24 11/03/00 (6)
    • Re: Re: Re: Ignition Coils, Still Confused? Ken McWilliams 17:33:07 11/03/00 (5)
      • Re: Re: Re: Re: Ignition Coils, Still Confused? To:. Ken McWilliams 20:33:56 11/03/00 (3)
        • Re: Re: Re: Re: Re: Ignition Coils, Still Confused? To Harvey form Ken 05:04:11 11/04/00 (2)
          • Re: Re: Re: Re: Re: Re: Ignition Coils, Still Confused? H MN 05:44:40 11/04/00 (1)
            • Re: Re: Re: Re: Re: Re: Re: Ignition Coils, Still Confused? James 13:17:17 01/05/02 (0)
      • Re: Re: Re: Re: Ignition Coils, Still Confused? GEO 19:26:39 11/03/00 (0)

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