Electronic Ignition: Description
All Federal 225" 6-cylinder engines use Chrysler Corp. Electronic ignition. This system consists of an electronic control unit, a dual pick-up distributor (with a reluctor and two magnetic pick-up assemblies), a dual pick-up start-run relay, an ignition coil, a single ballast resistor and both vacuum and centrifugal advance mechanisms. See Fig 1.
The control unit is connected to the rest of the system through a 4-wire connector. The distributor is connected to the control unit by two 2-wire connectors.
NOTE:
There is no terminal 3 on the control unit.
The dual pick-up start-run relay permits use of a dual pick-up distributor without electronic spark advance. This results in increased timing and improved fuel economy.