1966 Buick Skylark GS. Driving , running great , starts cutting out and gets worse and worse. Got home, checked different things, go to start and just cranks no start. Discover I have no spark coming out of coil to distributer cap. With key on have power to + of coil and power to - where distributer wire goes but no spark ot of coil. . New coil same thing. A couple older coils around garage same thing. Is the new coil I bought bad along with the older coils I had laying around along with the coil I started with or something Im missing. Points looked good. Original engine wiring harness has never been cut into or spiced up.