Coil Voltage

blewbyoutobad said

What is the coil voltage on a Mopar. I have heard it is 7VDC because of the ballast resister as opposed to GM HEI 12VDC or is that only at start-up?
Thanks FABO

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The normally brown bypass circuit, IGN2, supplies full battery voltage to the coil for start. The "run" line through the ballast actually goes dead during start. During start you should see whatever the battery is, during cranking, and you want at least 10-10.5V or more

"Running" depends on coil, RPM, charging voltage, a few things. Coil can be all over the map up to around 10-11V

With engine stopped, key "in run" coil might see 6-8V or so