11-20-2011, 09:41 PM
Pics would be most helpful. I don't know why you have a ballast resistor in your harness. Ford designed their harnesses not to have them, but it still drops the voltage to 6V at the coil. Sounds like something was 'redone'. Either way, you need 6V to the coil or else it will have a very short lifespan. you can find aftermarket coils designed to run off of 12V, if you want to go that route.