Long story short, I had a no spark condition and traced to a bad 12 volt source to the coil(took my car in for service, no idea why they changed the wiring)but when I hooked up a jumper wire from the battery to the coil, she fired right up. So now I need a good 12 volt source for my 67 and need help, as I'm really bad with wiring. Where do I start? Thanks!