I'm going backwards here again. Booster was bad so I had to cut off my adapter and re-weld it to the spare booster I got from Eddie. I should be able to get it back together tomorrow. A disk inside was cocked and may have been the problem.
I figured out the 2 wires that are used for the tow/haul feature. I can wire a momentary switch to activate/deactivate so that if I ever need it when towing the 65 Vette to a car show I'll have it.