Related Terms • Distributor • Distributorless Ignition System (DIS)

Definition: A type of Distributorless ignition system where individual ignition coils are mounted directly over each spark plug. No spark plug wires are used.

Related Resources:

The Ignition System
Here I discuss how the engine produces the spark and how it does it at the proper time.

Ignition Coils
How to inspect, test and replace the ignition coil in your car.