Cleanup turns to mess up. Need some help troubleshooting.

You provided a good data point for this issue: 9.4 volts to the 2 blue wires on the ballast, with the ignition switch in RUN (not cranking), is too low; it should be no more than 1/2 volt below the battery voltage. Get out the wiring diagram and start to trace from that point back to the ignition switch with the switch in RUN, and then back to the battery; you have excessive voltage drop somewhere. That needs to be fixed as you have a bad connection or wire or ignition switch.

BTW, in your last pix, the ballast has a crack in it. Replace it as it could be causing the 'off like a light switch' symptoms; that's not obsessing! LOL