Wiring problem

I know you guys get this all the time, but I need help with my 76 Dart Swinger. The P.O. messed up the wiring as usual and the motor was apart when i got it, so I can't make heads or tails of it. I need to know which wire to look for to get power from the switch to the coil and where ever else it needs to go to start the car. Is there some way I can come from the ballast res, or do I need to come from somewhere else. Thanks in advance for the help.