bcotrain

I have 5 DTC's: P0205 Injector Circuit/Open - Cylinder 5, P0206 Injector Circuit/Open - Cylinder 6. P0300 Random/Multiple Cylinder Misfire Detected, P0305 Cylinder 5 Misfire Detected, P0306 Cylinder 6 Misfire Detected. I replaced all 8 injectors with Mercedes OEM injectors. Getting battery current to injector at harness connector. Using a Power Probe IV (with Injector Tester) and back probing I'm not getting any activity on 5 & 6. Using cylinder 7 as a test, Power Probe IV showed the appropriate activity (battery current, voltage drop, duration of spray, Induction Kick). Seems as though the only thing this could be is wiring between injector and ECU or the ECU's drivers for 5 & 6. Thoughts?