Ignition Control to Distributor
Mopar ignition is complicated by the fact that older modules are "5 pin" and you cannot tell by looking because some newer replacement 4 pin modules still have the 5th pin--just not connected
Five pin modules MUST have a 4 pin ballast, but newer 4 pin modules can use either 2 or 4 pin--it's just that the second resistor is then not used
From MyMopar here are the simplified diagrams for 4 pin/ 5 pin boxes:
Simplified Ignition System Diagram – MyMopar
The reason there is a labled "new wire" is that these are geared towards conversion of older points cars. What is missing is the IGN2 ballast bypass circuit for start, which goes to the coil+ side of the ballast. NOTICE the path through the ballast to the coil, this is the SAME for either points cars, 4 pin modules/ 2 pin ballast, or 5 pin modules/ 4 pin ballast.
The difference is the 5 pin module is supplied voltage through the second resistor, molded into the same package in the 4 pin resistor
Here is yet another diagram from the same website
https://www.mymopar.com/downloads/Dual_Ballast_5pin.pdf
Mopar ignition is complicated by the fact that older modules are "5 pin" and you cannot tell by looking because some newer replacement 4 pin modules still have the 5th pin--just not connected
Five pin modules MUST have a 4 pin ballast, but newer 4 pin modules can use either 2 or 4 pin--it's just that the second resistor is then not used
From MyMopar here are the simplified diagrams for 4 pin/ 5 pin boxes:
Simplified Ignition System Diagram – MyMopar
The reason there is a labled "new wire" is that these are geared towards conversion of older points cars. What is missing is the IGN2 ballast bypass circuit for start, which goes to the coil+ side of the ballast. NOTICE the path through the ballast to the coil, this is the SAME for either points cars, 4 pin modules/ 2 pin ballast, or 5 pin modules/ 4 pin ballast.
The difference is the 5 pin module is supplied voltage through the second resistor, molded into the same package in the 4 pin resistor
Here is yet another diagram from the same website
https://www.mymopar.com/downloads/Dual_Ballast_5pin.pdf