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Old 12-06-2020, 10:35 AM   #8
Badpuppy
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Join Date: Dec 2017
Location: Guthrie, OK
Posts: 1,145
Default Re: 12 volt system on a Model A

Quote:
Originally Posted by Purdy Swoft View Post
With a three OHM coil the ignition will also operate on 12 volt . If a resistor and six volt coil are used , the ignition will be running on a weaker six volts and won't run as well .
Except they are two different coils. The "weaker" voltage drives the "stronger" coil, which the car has had all along. The two arrangements should be equivalent. The resistor just wastes >30W of power in heat.
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