Electrical gremlin

Hey all,
I have been trying to determine where my issue is and coming up with no luck. 74 Duster, The car was running the other day, shut it off and when to start it 10 minutes later and I have no power in the car, no dome light nothing. So after an hour of testing under the hood and at the bulk head i called it quits for the night. The fusable link is fine, I have 12v at the positive inside the car at the bulk head. I try to trace where I thought the positive ran from there and it lead me to the ammeter, so for some reason a decided to smack the dash. What do you know the light came on and the car started. So I tore the gauge cluster out and tore it all apart to see what the issue is, the ammeter had corrosion all over and obvious burning on it. The positive post was loose to the base so I though this is the issue for sure.

Now that I am thinking about it, that cant be the issue can it, since the ammeter has nothing to do with the rest of the electrical how would that cause the issue. Did a bandaid fix and put a little JB weld on the post to the base on the backside and cleaned all connections up. And now I'm back to no power in the car.

I have 12v coming in the car at the bulk head and 12v at the ammeter, no where else I have tested.
I tested at the fuse box on the Red w/white strip and smaller red, I have checked the seat belt module (im pretty sure that is what the 2 connector little box under the dash is) and still nothing. Also tested at the connectors going to the steering column and same no power.

Where should I test next? Also the little control module is this needed, I found the capacitors are pretty corroded and breaking apart.