Does Anyone See An Issue With Splicing Ign 1 & 2 at Harness?

^^^^^ This.
When you turn it to run (not start) the red light on the box should come on. Jiggle the wiring and look and see if it goes out. Sounds like the switched 12V source you tapped into isn't a good one.
When I wired my MSD I ran the heavy red/black directly to the battery (constant 12V) and then the small red to a random keyed ignition source, ie:switched 12V, (I was able to use the ballast resistor).