Hi, I have been having problems getting spark out of my coils. By chance, I just found out that if I unplug the medium size wire harness from the ecu *the middle connection* the engine has fire when I spin the CAS. What would cause the center wire harness to keep the engine from firing?? Thanks!!

By the way, it does the exact same thing with a 2nd ecu that i tried. So, the ecu's cant be the problem. What all runs off the center connection? THANKS!!