No Spark

Darthomas said
Only contiuity on the primary connections.
No continuity to anywhere from the secondary center post, not even the case.
In the middle of trying ready the house for sale, so may not be moved and able to cut it open till later this
summer. It must be arcing inside to complete the circuit. If it did have continuity to either end of the primary, it wouldn't be biting me when I puled it with the motor running.

I suspect your coil has a isolated secondary design. The secondary terminals are the center tower and the case. You should have continuity but high resistance between the two. That would not be the original type used on the car. It works the same as a coil used on a distributorless ignition that has two secondary terminal for spark plug wires, except that one terminal on your coil is the case.