HELP..Mopar Perfomance ECU No spark

i called the mopar performance tech line. I told them everything I did.....they were saying you must have a bad box and then he said..."did you put the screw in the center of the harness"? I said what screw. He said put the screw in and it should fix it. I am going to try that in an hour or so....keep the fingers crossed.
The problem I have is although this is brand new, it was purchased in 1999 and the car has been in resto ever since. Bet I have a hard time getting it replaced.