Thread: Overheating Ignition Coil

Thanks for your help you obviously know your electrics still not sure if my problem is not just too much voltage supplied to coil .ie alt voltage regulation ,when running with charged batteries voltage at coil is 13.5 is that too much for a 12v coil
Regards Wayne

As I said the supply voltage does not affect the coil output. Electronic ignitions happily run from about 10 volts to 15 volts without any change in output. The "dwell angle" set by a timing capacitor inside the amplifier will be out of calibration, a much longer dwell time than necessary will cause excess heat in the coil. You need a new ignition amplifier, either genuine or adapt another type as I suggested before.