1973 Scamp won't start in start only in run. With a Twist....
Let's make this even simpler: Here is how we are wiring our conversions to run a GM HEI and a Mopar distributor, no ballast:
The distributor trigger is just like the Mopar ECU.......two wires coming from the coil pickup, trigger the GM HEI
The coil NEG hookup is the same.........the HEI shuts off the coil NEG when the box is triggered, forming the spark (coil magnetic collapse)
ONLY difference here is that there is no ballast............IGN1 and IGN2 are jumpered together because of IGN1 going dead during "crank."
If the ballast was there / used, the wiring for this would be EXACTLY the same as a Mopar 4 pin ECU
Let's make this even simpler: Here is how we are wiring our conversions to run a GM HEI and a Mopar distributor, no ballast:
The distributor trigger is just like the Mopar ECU.......two wires coming from the coil pickup, trigger the GM HEI
The coil NEG hookup is the same.........the HEI shuts off the coil NEG when the box is triggered, forming the spark (coil magnetic collapse)
ONLY difference here is that there is no ballast............IGN1 and IGN2 are jumpered together because of IGN1 going dead during "crank."
If the ballast was there / used, the wiring for this would be EXACTLY the same as a Mopar 4 pin ECU