Im a Idiot / Help needed electronic ign
First thing we need to know is "where did you get" the system, IE what did it come out of, and does it have a 2 or 4 terminal ballast?
Here's the deal:
Earlier ignition boxes were "5 terminal" and MUST have a 4 terminal ballast.
Later ignition boxes were "4 terminal" and can use EITHER 4 or 2 terminal ballast
You CAN NOT always tell by looking. Some 4 pin ECUs have 4 physical pins, some have 5. If you are not sure, you can only tell by using an ohmeter on the 5th pin and determine if it's connected.
Diagrams from MyMopar:
Later 4 pin ECU/ 2 pin ballast:
What is not shown here is the brown bypass wire which hooks to the coil+ side of the ballast. The resistor and factory wireing are actually UNchanged. You would mount the box, hook up the distributor plug, hook the wire shown to coil NEG instead of the distributor points wire, and then hook the remaining power wire from the box to the far top right of the diagram, which goes off to the original "switched ignition run."
Earlier 5 pin ECU, 4 pin ballast. They are the same except for the second resistor (left side) with one more wire going to the box. NOTICE the upside down "U" cutout in the drawing at the bottom end of the resistor. It is IMPORTANT that you wire it with the cutout as shown. The two resistors are different values, IE the "coil" side is close to or same as the 2 terminal ballast, but the side going to the ECU is different.
First thing we need to know is "where did you get" the system, IE what did it come out of, and does it have a 2 or 4 terminal ballast?
Here's the deal:
Earlier ignition boxes were "5 terminal" and MUST have a 4 terminal ballast.
Later ignition boxes were "4 terminal" and can use EITHER 4 or 2 terminal ballast
You CAN NOT always tell by looking. Some 4 pin ECUs have 4 physical pins, some have 5. If you are not sure, you can only tell by using an ohmeter on the 5th pin and determine if it's connected.
Diagrams from MyMopar:
Later 4 pin ECU/ 2 pin ballast:
What is not shown here is the brown bypass wire which hooks to the coil+ side of the ballast. The resistor and factory wireing are actually UNchanged. You would mount the box, hook up the distributor plug, hook the wire shown to coil NEG instead of the distributor points wire, and then hook the remaining power wire from the box to the far top right of the diagram, which goes off to the original "switched ignition run."
Earlier 5 pin ECU, 4 pin ballast. They are the same except for the second resistor (left side) with one more wire going to the box. NOTICE the upside down "U" cutout in the drawing at the bottom end of the resistor. It is IMPORTANT that you wire it with the cutout as shown. The two resistors are different values, IE the "coil" side is close to or same as the 2 terminal ballast, but the side going to the ECU is different.