Ignition
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Ignition
I need to know the voltage that should be going into my duraspark II control module. I have a new one and I don't want to fry it. Voltage at the coil with key turned to run is 7 volts. Voltage going into the old control module wired up with key in run is 12 volts. Isn't this too high for the module? How can I correct?
1978 F150 4x4 351m
1978 F150 4x4 351m
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
12 volts goes to the module. The voltage at the coil should be around 7 volts in RUN because there's a ballast resistor in series with the coil primary winding when the key is turned to RUN. Sounds like you're fine.
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jshad101
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
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Nov 11, 2014 05:50 PM
