MOTORCRAFT DURA-Spark & Solid State Ignition: Operation: Distributor

The distributor contains a pick-up coil which produces a magnetic field. The armature, turning with the distributor shaft, causes the magnetic field to collapse. The module senses the make and break signal of the magnetic field and signals the ignition coil to turn on and off. The Solid State ignition system uses a conventional distributor and wires. The Dura-Spark I and II ignition systems use a modified distributor assembly (special rotor, cap, and adapter) and 8 mm secondary wires to provide better insulation for the higher secondary voltage.