I believe this is why that two ballasts are used with these, as was
mentioned in an earlier post by someone. One for the normal run side,
and one for the Start side. Normally, the coils are charged directly by
the battery when cranking where the voltage drops to around 10V. then
the ballast is used to keep the voltage available to the coil at around
9 to 9.5 volts when the engine is running and the electrical system is
at 13.5v (normal running voltage)... It all depends on the coil + module
combination, and how they are powered.
Rich
>----------
>From: richards@northcoast.com[SMTP:richards@northcoast.com]
>Sent: Thursday, January 16, 1997 8:40 PM
>To: Ken Tisdale
>Cc: tigers@autox.team.net
>Subject: Re: Electronic ignitions
>
>Not many have an "original" that still works but I believe (don't quote me on
>this -you
>can check it with a voltmeter) most coil balast resistors reduce voltage to
>about
>8-volts. Mallory can give one the skinny on the proper voltage. I do know
>that 12
>volts will disable the the sensor pick-up and they are about $80.00...I once
>hit a wall in
>an old 63 galaxie (converted to a modern 70 SCJ 429 with an uniilite as the
>ignition
>unit) and my ignition switch failed. I was drunk and in sort of a hurry so I
>hot wired
>the coil. Next time the Unilite was operable was after I replaced the
>pick-up sensor in
>a fibreglass Cobra replica..........
>
>Anyways-pretty much bullit proof if the input voltage is kept under 8-volts
>or so...
>
>Hope this ramble was helpful-Chris
>
>On Thu, 16 Jan 1997, Ken Tisdale <ktisdale@ix.netcom.com> wrote:
>>Does the original ballast resistor work just fine, or does one have to
>>change the resistor? If so, what new resistance is needed?
>>
>
>
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