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?).

At 7,000 rpm, a spark plug ignites the air/fuel mixture nearly 60 times per second. Any one of those 60 sparks going amiss can at best be mildly annoying, and at worst cost you a race or an engine.

Hinckley Triumph motorcycle owners have been complaining about ignition coil failures. In Triumph Ignition Coil Replacement Part 1 of this two-part series, we described a coil replacement on a Triumph ...