Battery shorting killed all power

Matt K. said

I have a 1975 slant six Dart I was doing work on. I attached the negative terminal and while I was tightening the positive terminal my wrench hit the metal battery bracket, shorting out. Now my car has no power anywhere. Everything in the engine bay is okay; battery, starter relay, fusible links, fuses, and bulkhead. I have continuity from the battery to the bulkhead. Something is shorted somewhere and I am lost with the factory electrical drawings. Please help.

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A short between the positive terminal of the battery to ground won't typically do much if it's quick. If it's not quick, the negative battery wire or terminal or smaller ground wire can smoke.
If you leave the battery connected you can use a test light to probe for power where it should be. With the battery disconnected you can use an ohmeter to check continuity between the positive battery wire terminal and wherever power should be.
Do any other electrical accessories work? If it's just the starter, I'd check the neutral safety circuit and the connections to the starter relay to start. Easy to have accidentally unplugged something or broken a wire, or bumped something.