What is minimum electrical required to start my car?

mopardude62 said
In the first picture isn’t that a seat belt ignition relay? You said it’s a 74 Dart and won’t crank, could that be the problem?

YES IT IS.... it is not hooked up on the inside... and it turned over by the key(many many times) before removing battery, now it don't... so didn't think that was a problem, but really dont know