Fig. 1. The layout of a typical six-cylinder, six-volt ignition system. Note the relationship of the primary and the secondary windings as indicated in the ignition coil. See All 10 Photos Fig. 2. The ...
A windings road:It all starts with the concepts of inductance and electromagnetism. Inside an ignition coil there are two sets of wire windings (aka coils, that's why it's called a "coil," get it?).