MSD "ready to run" system

You don't need to rewire. As someone above said, the coil part of the resistor is same as points or electronic. I am assuming? you have a 4 pin resistor?

Here is what that is.

The resistor is keyed (look at the "U" at one end) so it only connects one way, as the two resistors are different values. One supplies the coil, the other supplies part of the circuit in the ECU. The 2nd resistor was eliminated in later ECU's. That is, a later 4 pin box can use either a 2 or 4 pin resistor, but a 5 pin box MUST have a 4 pin resistor, if it is truely (electrically) a 5 pin box

So the power from the key to the resistor goes to two terminals with a short jumper in between. This is the "run" voltage.

One of the others goes back to the ECU and you can leave that out

The 4th goes to the coil. So jumper the key / ignition switch power to that 4th wire, and this will also hook in the wire with the bypass, and then just run the old coil + wire to the new system

In other words you are eliminating one wire, from the 4 pin resistor to the ECU, and of course leaving the old distributor connector unconnected.