[buzzinhalfdozen]

I may be wrong but I seem to recall the digital 7's having an LED on them that when blinking during cranking indicate it's seeing a trigger (crank sensor input), you may want to read the instruction manual on that. If it's in fact the case and you're seeing it blink, that would indicate to me that the triggering is working correctly. I'm not familiar with your system but most merely piggyback off the MSD for RPM (trigger) events which it needs to operate. Would be a quick way of determining what side to look at spark or fuel. Joe