Ignition Coil

Coils are oil-filled, and are energized whenever the ignition switch is in the "ON" or "START" position. They contain a positive "BATT" terminal, a negative "TACH" (sometimes called "DEC") terminal, and a single secondary terminal.

NOTE: "DEC" refers to Distributor Electronic Control. This terminal is also referred to as the "Tach Test" terminal.

A special connector attaches the Green wire from the control module to the negative terminal ("TACH") and the wire from the ignition switch to the positive terminal ("BATT").

Fig 1: Schematic of Dura-Spark II Ignition System Illustration shows relationship of components to each other.