Electronic Control Module

Each Dura-Spark II module has 6 wires (a 2-wire and a 4-wire connector). See Figure and Figure. Dura-Spark systems with UIM modules have an additional 3-wires leading to one 3-wire connector. The Red and White wires are ignition feed wires (the White wire is for cranking and Red wire is for operation after the engine is running). The Red wire circuit contains a 1.1 ohm resistance wire.

Current to the ignition coil primary circuit is turned on and off through the Green wire. The Orange and Purple wires transmit signals to electronic control module from reluctor (armature), and pick-up coil (stator) in distributor.

The Black wire is used to ground electronic control module through the distributor housing. On models with UIM module, additional 3 wires connect to either a vacuum modulator valve or a barometric pressure switch.