Fitech Wiring Issues

I can't tell from that what you had or have done, except it appears you have the brown on top right. Check what is happening right there. Do this:
Put a light or meter on the left side (to ground) Turn key to "run." Should be hot. Crank engine and look at meter/ light when cranking. I bet it is cold

Now put light/ meter on right side on the brown. Do same thing. I bet brown is hot in "crank." If so, splice the brown into the wires on the left. You do not need the ballast with MSD

Left side is likely "run" or IGN1 from the key. Brown on right is likely IGN2/ bypass