I'll try to sum this up. When I turn the key to start the engine everything dies. Power is completely gone. Disconnecting and reconnecting the battery or waiting long enough (hours) and it gets power back to do the same thing again. All main and glove compartment fuses and relays have been tested. Relays tested for both continuity with 12V and no continuity without. The battery and cables are only a month old and there are no shorted wires under the dash or going to the shifter. I even cleaned off the connections as well as the ground to the frame.
OK, on to the good stuff. Interior lights work fine but when I push the lock/unlock buttons I get sounds coming from my BCM. Slightly different sound for each. I also get sounds for the seat moving toggle and my remote does nothing. Thoughts on the issue? I've completely disconected the DRL's and tried one by one on fuses to no avail. I'm thinking it's the BCM or the ignition switch or whatever it's called (blanking right now on that). Ideas? I've managed to remove the BCM and there are no burnt spots or blown capacitors inside.
Edit: Probably should mentio its a 2000 GTP and I have have an aftermarked starter just to make things more complicated.