PCM wiring

No, I’m not using the ballast....just power directly to the PCM. So....the ignition 1 wire (blue) has 12v when the key is on and drops to 0 when cranking (as it should). However, the ignition 2 wire (brown) has 0 with the key on, and just gets a quick burst of about 4 volts when it starts cranking- then goes back to 0 as it is cranking? I’m assuming this is not correct?

However, it still doesn’t make sense to me (even if I used those wires to power) because I can jump the PCM with direct power and I get power to the coils, but no spark and no power to the fuel pump?

Thanks again....its been very helpful as I dig in deeper!

The IGN2 should be hot with full battery voltage whenever the key is in "start." Backtrack through the bulkhead connector and see if that is the problem. If not it is right at the key. That wire only goes one place......from the ignition switch, through the bulkhead connector, to the coil+ side of the ballast. Might be the ignition switch connector as well