You can verify two things by using a volt ohm meter on the ballast resitor, one is the resitor and the other is the ignition switch and wiring by having someone else put the tranny in any gear other than nuetral or park and turn the key to the start position while you put the volt meter leads on both ends of the ballast resitor to see if you have voltage or not. You should see voltage on one end but not both If you have that then have the other person release the ignition switch to the run position and see if you have voltage on both ends of the resitor, you shuold have 12+ volts on one end and less volts on the othor end going to the coil + side in the run position
Let us konw what you find please, that may help others on here later