MSD Ready to Run wiring question

You must add wiring in addition to the wiring kit. The blue going to the flat VR must be hooked to "ignition run." The second wire from the VR goes to one of two alternator field connectors, and the other alternator field connector T's into the "ignition run" as well

The original ignition switch has IGN1 (run) and IGN2 (bypass circuit) If you are NOT using a coil ballast, hook those two together and use them for "ignition run." If you ARE using a ballast, hook IGN1 to your ignition run circuit, and run an additional wire from the ignition switch IGN2 to the coil+ terminal

Not sure about "alternator exciter" as it may be wired into a warning light circuit. If not it could feed the alternator field blue connector and the VR blue connection. I would not use it and instead, those into "ignition run" as mentioned earlier

I have no idea what you mean by "MSD start cable." DO NOT eliminate your starter relay. If you have a stick, it is tied into the clutch safety switch, and if automatic, it's tied to the neutral safety switch

There are two small flag "push on" terminals of the starter relay. One gets "start" signal from the ignition switch, the other terminal must be grounded to operate the relay. With either a clutch or automatic safety, that wire goes to the switch, which grounds the relay coil if in park or neutral