Alarm flickering and wont let me start the car

[gmprojectzx]

Let me introduce myself, my name is Galen and I'm new to this forum. I went to start my Z last night to leave, and the car went dead. I wiggled the terminals, and the power kicked back on, but it kept flickering. I have tried removing both battery terminals, turning the key on for 30 minutes to reset the alarm, I have tried unlocking and unlocking the driver and passenger doors to kill it, but it still flickers. I have tried unplugging the anti theft box, ecu and all that and it still wont turn over or stop flickering. I have tried EVERYTHING. Is this a bad door switch causing it to not recognize I'm unlocking and locking the car? My radio is dead and the car wont turn. Like I can hear the starter, but the engine won't turn over. PLEASE HELP. Thanks guys.

[t.mcginley.jr]

Did you check the battery voltage or check the ECU for codes yet?