Help with MSD 6AL and billet distributor set up

I'm following up on the advice, looking at the wire routing on the original harness to figure where wires come from and then testing at either end. I think you guys are on to something about the wrong wire hooked up from the ballast resistor. What blows my mind is that I installed this system in 2005 and it had worked great until it didn't a few weeks ago. I sent the original 6AL box to MSD to see if it was screwed, and to get it rebuilt for a back up. I'll let you know what turns up.

More suggestions of stuff to test are welcome!