Matthew,

We had a hard time finding cords to complete connections with the spectrum system. When it is right it is good, but it can drive you crazy. When you come across the no start, do you read any additional codes? Check distributor close, cap, rotor, wiring and connections. I have seen the rotor failing causing something similar. Normally if the ECM is missing something a code will show. I retired last year and do not have a lot of info to look at. Sorry