So this is a bit embarrassing and frustrating. Turns out that brown wire just needed to be connected to 13 volts and now everything works! I strongly suspect that was the problem all along. I can't believe I missed this when I was checking for loose connections. Well, at least I learned a but about soldering and desoldering?thyristors!
I have a lot more work that needs to be done to this rig, but getting her to power on is a good first step! Thanks for the help guys, I'll start a new thread when I get to the next hurdle.
-Steve KI7WQH
KI7WQH Steve