Electronic Control Module (ECM)

There are 6 wires leading from the control module, 2 to one connector and 4 to another. The White and Red wires are for ignition feed circuits. The Dark Green wire turns power to the ignition coil on and off. The Light Green wire supplies a compensated ignition spark timing signal to the ECM from MCU. The Black wire supplies the distributor ground circuit. The sixth wire is not used.