Need help, Dart won't start...

Run a wire from the + battery to the + side of the coil. And crank. If it fires then its in the wiring from coil to ignition switch or the switch or the ballast resister or wiring from switch to batt. If not then coil, dist, rotor, cap, points, timing etc.
(Dont leave the wire on the coil for too long or you will damage the coil)