'72 Valiant has no power

No horn, dome lights, brakes, anything? Anyway, listen to 67dart273. One of the better informed electrical guru's. I had a bad bulkhead connecter on my old 71 Swinger. Everything would go blank if that came loose, but you could see where the connector had overheated at one time. My best advice would be to eyeball wires, looking for anything melted or doesn't look right.