pownallpete

I have a 1977 280Z with the dash removed (no Tach). I have been all over this engine, wiring and relays I have good (-) coil pulses to both the Transistor Ignition module and to the ECU Pin#1. ECU pin# 1 and Pin #10 are 12 V . Pin# 20 is 0v at ignition "on" but +12V at "start". I have +12V on one side of the injector connectors when the harness is fully disconnected from the injectors. I have bluish orange spark at the coil and spark at all plugs. I do not have any injector pulses, which was verified by 4 different noid lights. With the ECU removed I can fire each injector individually by grounding 15,33,32,14,30 and 31 on the ECU connector. I have 4 different ECUs the were verified when the car was running and still no injector pulses. What Am I missing? I noticed on a previous post Zed Head stated the car would not run without the Tach........??? I would like a little knowledge on that if that is really a thing. As Johnny Five said "I need Input" Thank you for any help!