Electronic Control Unit
There are 6 wires leading from the control unit, 2 to one connector and 4 to the other. The white wire and red wire leading to the 2-wire connector are the ignition feed circuits - the white wire for cranking, the red wire after the engine is running. The control unit uses the green wire to turn power to the ignition coil off and on. The orange and violet wires are used to transmit signals from the distributor's sensor to the control unit. The black wire supplies the distributor ground circuit.
NOTE:
The electronic control unit is permanently sealed to resist moisture, vibration, dirt and atmospheric conditions. It is not repairable and must be serviced as a complete unit.