Originally Posted by RIPSAW

Subscribed to study what drives the coil in a 94 Harley. ECM, electronic ignition or points. The answer is electronic ignition. My two cents. You should be able to check coil with a resistance meter. Will need a service manual or a good friend on here to give your the value. The trigger for it is under the timer cover and it is electronic. If it is bad, after you replace it, be sure to put a dc volt meter on the voltage regulator wire going to the battery and with it running at about 2000 rpm should be around 14.7 volts dc more or less. Now this is important. Flip the meter to AC. The reading should be zero. If it shows any AC, the diodes in the regulator is bad and this AC voltage will kill the ignition sensor under the timer cover that controls and fires the coil in short order.