No spark on the plugs

Helppppppppp guys, just getting my 73 Challenger 340 six pack together and I have no spark at the plugs, new ECU, new distributor, new coil, new rotor, new distributor cap, new volage regulator, new key switch, new battery, new spark plug wires. Have voltage to the ECU, to the voltage regulator, to the positive side of the coil, to the alternator. Battery is grounded to the engine and the chassis, the engine is grounded to the chassis also, the ECU is grounded. I timed the engine at 0 degreees TDC on compression. Set the electronic pickup in the distributor a 8 thousand of an inch. When I unplug the ECU I have voltage on both the negative and positive side of the coil, Voltage to the ballast resistor is good on all 4 posts. Starter engages and rolls the engine , fusible link is good. Have voltage on both sides of all fuses. The odd time I get spark but it is not consistent and the engine started once for a few seconds. Any ideas??????? Pulling my hair out in Toronto. :confused::confused::confused:

Something also have no headlights, tailights or dash lights but the horn, signal lights and brake lights work. Totally rattled and confused on this one. :confused::confused::confused:
Author: Drmktchr