Points to electronic
I, too, use HEI, but I elected to use the older "4 terminal" HEI module. I just use a factory coil, and no ballast. The module must be mounted on a flat piece of metal (mine's just on the firewall below the wiper) with thermal compound, and MUST be grounded.
The early Mopar boxes needed a 4 pin resistor, which in reality is two resistors "in the same box." One resistor of the two is basically the same as your old points resistor, the added one is to power the box
You cannot always tell by looking, but after the late boxes came out, they became known as "4 pin" and "5 pin" a boxes. However, many "4 pin" boxes still have 5 physical pins, it's simply that one is not connected.
So an early, 5 pin box MUST have a 4 pin resistor
A late, 4 pin box CAN use either a 2 or 4 pin box. It's just that the second resistor does not do anything at the box end
Wiring differences. The coil part of the resistor is always wired the same, and same as "points."
Older, 5 pin. Note that the top of the resistor is jumpered together, and the top right goes off to "ignition run." Note that the 4 pin box below, the left side of the resistor is left out, and that pin of the box is not connected. Also note the "upside down U" at the bottom of the drawing of the 4 pin resistor. This marking is "how you know" you have the resistors hooked up correctly. They are different values
I, too, use HEI, but I elected to use the older "4 terminal" HEI module. I just use a factory coil, and no ballast. The module must be mounted on a flat piece of metal (mine's just on the firewall below the wiper) with thermal compound, and MUST be grounded.
The early Mopar boxes needed a 4 pin resistor, which in reality is two resistors "in the same box." One resistor of the two is basically the same as your old points resistor, the added one is to power the box
You cannot always tell by looking, but after the late boxes came out, they became known as "4 pin" and "5 pin" a boxes. However, many "4 pin" boxes still have 5 physical pins, it's simply that one is not connected.
So an early, 5 pin box MUST have a 4 pin resistor
A late, 4 pin box CAN use either a 2 or 4 pin box. It's just that the second resistor does not do anything at the box end
Wiring differences. The coil part of the resistor is always wired the same, and same as "points."
Older, 5 pin. Note that the top of the resistor is jumpered together, and the top right goes off to "ignition run." Note that the 4 pin box below, the left side of the resistor is left out, and that pin of the box is not connected. Also note the "upside down U" at the bottom of the drawing of the 4 pin resistor. This marking is "how you know" you have the resistors hooked up correctly. They are different values