 Ballast Resistor ? |
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| Ansbacher |
 Jan 24 2020, 11:49 AM
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#1
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Senior Member  Group: Members Posts: 689 Joined: 4-July 14 From: Tampa Bay, Florida Member No.: 17,589  |
I am preparing to install a Pertronix Ignitor (1847A) in my '74 2.0L with dual carbs. I am running a stock coil. The instructions mention the possibility of the presence of a ballast resistor in the ignition system. How do I determine if my car has one; where would it be located? Or, do I perform an ohm test of some sort to tell? If so, what is the procedure?
Any help much appreciated. Ansbacher |
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| malcolm2 |
Jan 24 2020, 05:20 PM
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#2
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Advanced Member Group: Members Posts: 2,747 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States 
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This is what the HOT SPARK folks say the BR is for and how to install etc....
External Ballast Resistor: If the charging system voltage, measured at the coil's + terminal, is more than 14.0 volts at any RPM level, the voltage regulator likely needs replacing or a 1.4 Ohm ballast resistor should be wired between the coil's + terminal and the red HotSpark ignition wire. Too much voltage can damage the ignition module and other electronic components. Again, this is HOT SPARK. You should check and see if Petronix has similar tests. Was your question, should I install a BR, or Do you currently have a BR? I thought it was the latter. |
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Posts in this topic
Ansbacher Ballast Resistor ? Jan 24 2020, 11:49 AM
malcolm2 It would be between the coil and the electronic mo... Jan 24 2020, 11:56 AM Tdskip Get other opinions here but I think not, don't... Jan 24 2020, 11:57 AM
porschetub
Get other opinions here but I think not, don... Jan 24 2020, 12:17 PM DickSteinkamp
This is what the HOT SPARK folks say the BR is fo... Jan 24 2020, 06:04 PM |
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