Another widely misunderstood fact is that the coil does not continuously produce its advertised output. A coil will produce only the amount of voltage necessary to jump the gap(s) in the secondary circuit. (rotor/cap,wires,plug gaps) and no more. Most of the time the engine runs on a fraction of a coils rated output.
This is fact!! Anyone who thinks a "40,000 volt" coil always puts out 40,000 volts at every spark needs to copy this and put it on the shop refrigerator!