Ballast resistor

[ford38v8]

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Originally Posted by gearheadbill

Rotor wrench: Sure glad I read your post. Converting my 40 back to stock coil from can-type coil...checked the voltage to the new (old-style) coil I just got from Skip Haney. It reads around 6 volts; i.e. little or no resistance. The previous owner probably removed the resistor to utilize the can-style coil. Looks like I need to crawl under the dash and replace the resistor. Thanks for the heads up!

Bill, You may find that you do still have the resistor in your circuit, if your 6v reading was taken while the points were open. When the points are closed is when the resistor will do its thing and your reading should be about 4v.