where can i find wiring for dummies?

Putting my 70 duster witing back together. PO has it all cobbled up. Alot of missing connecters and im not sure where some connecters and wires go. The far right bulk connecter in the pic is literally not hooked to anything. Has cut wires everywhere.

I also need to know how the starting and charging system goes back together

Sorry to sound dumb but this is my first real hotrod build and i absolutly suck at electrical