Deathtrap, My 74 Plymouth Scamp

The 5-wire harness will accept either a 4-pin ECU or a 5-pin ECU with no changes; the extra pin is just not required on the 4 pin
See I was searching and the 5 pin harness will go to either but what it's wired to changes. So I went and got a 2 post ignition resistor and another 4 post and a starter relay. I searched and got the wiring for the 4 pin ICM and I will go through and rewire my ignition system to the 2 post resistor.