Not Getting 12 Volts at Coil

You may be right, however the ECU is new and I have run a ground wire from the bolt to the inner fender. Is there a way to verify I have a good ground?

With an ohm meter , one probe on neg. battery post, other probe on ECU case, distributer housing, etc. Looking for a close to zero ohm resistance between componenys and battery ground.
Question.. are the factory connecters at ballast resister clean and tight.
I've seen those broken and allowing the female space connecters push out. I've seen those females worn, streched open, corroded.
So many little things easily overlooked.
To find out the parts store sold you a bad ECU can burn your bisquits but to find out the problem was fuel quality all along will too. So lets rule that out. Get a can of starting fluid, aresol ether. Block the choke butterfly open , give it a shot and try to start it. Hotter fuel will fire with a weak spark.
Kinda wish I was there to help. I wouldn't be able to sleep until I made the darn thing run. LOL