MSD Questions

I'm using my stock distributor, electronic. I have the MSD 6A and I have the instructions. According to A-body Joes diagram, the small red goes to the origional coil (+) lead, does that mean splice into the origional wire, Is that switched power? and use the green and violet harness?

69signet, the brown/blue wires from ignition, is that the ballast resistor?