Urgent help require

Any one know of a good shop in east st louis area , at alorton flying J. Cleaned battery posts and now there is no power to freedomline transmission. Shifter has no light, none of the r n f light up and the dash shows two dash line. When i go to fault diagnois it comes up with operation falled.
Help

 

I gone over the batteries I dont know how many times. There are no loose wires anywhere. So what i did that got me here.
The alternator had green on the large wire at the top and rust on the smaller two terminals that have wires attached. I hook the batteries. I unhooked the small terminals and the large one. Cleaned and replaced connections. Top get power, bottom has power, the other one has no power and shows ground. Now the one that shows groung , the small one, it terminal turns and turns. I found a small 9mm that fit the inner nut and snugged it tight. Hooked up that wire. Could this be the problem?
Got truck started by jumping starter soleniod. Would not start with key.
Now have data link error, no tach no gear box, no gear box temp. Check data link. Going to try the guy in bellville tomorrow.
What a great fathers day. 14 hrs from home and no way to get there.

 

Thanks. I have checked all fuses at the batteries. They check fine on both sides. But on the alternator and i think this might be the issue after googling delco remy, one of the terminals kept turning instead of doing up. The alternator is putting volts, the dash shows 13.8v but the terminal that kept turning showed no power but did have a wire hook to it. I dont know just hope.

 

Hope you are right. Will take another look in the morning when my headache is gone. What do you think about the terminal on the alternator that kept turning. I was holding the wire and didnt notice that the terminal kept spining