1968 Ford, 427, 300 hp. (chris craft) engine. I just replaced the old point system with the Pertonix Ignitor II system and new coil. I am not getting fire at the coil. Installation manual suggested a jumper between the battery positive and the igniter II red wire (bypass coil and regulator) to see if there was a low voltager. Did that, and the engine still would not start (cranks only). Need some diognosic advice here.