Thanks,
I measured the wire for 12volts with ignition on and cranking.

I don't get spark
I believe the distributor is a GM HEI and ONLY the coil is accell. The base of the distributor has a three wire connector coming out of it. I don 't see a plug to mate to it and the terminals don't look like anything has been plugged into it in a long time. There is a module in the base of the distributor under the weights- doesn't that need 12 volts?
Thanks,
Brad