It's a very simple system to trouble shoot.If it has a balast resistor,see if you have voltage on both sides,if only on one side put a jumper wire across it(bypass).If you dont have any power to it the problem can be at the ignition switch or the starter relay,also check for a fuseable link in the hot wire running from the battery post.You can bypass everything and run a hot wire from the battery to the coil.If you still don't have power to the points replace the coil,and if you still don't have power replace the condenser and points.Make sure that your points are set correctly-.015-.017 gap or 28-32 degrees dwell.