Mopar ecm issues. Why wont they work?

If you have triple checked the ground and they ecu's are for sure grounded and none of them work id start looking elsewhere. The chances of having 4 bad ecu's are slim. Check for spark at the distributor. Check your coil and check for power on both sides of the ballast. Del has an awesome step by step write up on here. He helped me when I was getting no spark. Ill find the thread and post it here