MAIN HOME PAGE > > Technical T O C > General Engine Specs > Ignition Conversion Page 1 > Chrysler Electronic ( used from the early to late 70’s)
Special thanks to John B. at: johnb66@aol.com for submitting the following infoREPLACING ELECTRONIC IGNITION:
Additional Tools Required:
None.
- Connect the two wire connector to the new distributor.
- Disconnect the five-wire connector from the production Electronic control unit (ECU). Unbolt the old ECU and replace it with new performance ECU.
Note: The ECU’s used from 1972 through 1979 had five pins or connections. The new performance ECU has only four pins.
- Reconnect the five-wire connecter.
- Remove the two connectors from the ballast resistor. Note that in each of the connectors there are two terminals. On one connector, there is usually one 18-gauge dark green wire in one terminal and a 14-gauge brown wire in the other. On the second connector, there is usually a 18-gauge light blue wire in one terminal, a 16-gauge dark blue wire in the other and 18-gauge black wire connected from one position to the other.
- Unbolt the old ballast resister and install the new ballast resistor in it’s place.
Note: The ballast resistors used from 1972 through 1979 had four terminals. The new performance resistor has only two terminals. The two extra terminals fed the fifth pin used on the early ECU; and are not required with the performance four pin ECU.
- On the first connector of the new ballast resistor, plug the terminal containing the 14-gauge brown wire onto one terminal of the new ballast resistor. On the second connector, plug the terminal containing the 16-gauge dark blue wire onto the other terminal of the new ballast resistor. The unused terminal on each connector will be left empty. As stated in step #5, they fed the fifth pin on the ECU and are not required on the new four pin ECU.
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