[Razorback1980]

Hey David....

coil has two circuits in it. For a coil to work it has power on one side from the key switch and the DME cycling on the second circuit is what makes it send the spark. That's oversimplified, but hopefully it will make some sense. So, if a coil is getting power from the key doesn't mean the coil is going to send a spark...the DME has to be working it from the other circuit to make the spark happen. So, to answer your question...if the DME or one of it's inputs (including sensor) are not working properly, you will not get spark to the distributor.

If I were you I would follow the advice of the post before me, SoCal really knows these cars well and he will not steer you wrong.