Wire harness HELP!!!

ok, I don't know much about wiring and I don't know anything about how it all works, but my husband had his cousin rebuild the 360 for the 1976 Duster we own. The catch is, his cousin moved away before the wiring was put back together. Neither me or my husband know much about wiring. I do better than my husband so I'm the one learning and putting it back together. Need lessons and help. There is also the issue of breaking in the motor without messing it up. Need help with that too, but for right now I gotta learn the wires. Thanks.