Thanks for your input. I disconnected all of the positive terminals to the chassis batteries, cleaned them up and that solved the voltage to the solenoid. Unfortunately, I have a voltage drop from either the "Neutral" gear switch or "parking Break Engaged" circuits. I get 12.7 volts at the fuse box, but it's dropping to 9.5 volts on the controller.
I am able to bypass with a home made harness (3 positive, 1 ground) and jumper cable, so the control panel turns on and the jacks work. Why the heck am I loosing 3 volts within about 4 feet of wire