No start, no crank, no power

Thanks for your quick response! I’ve tested everything ( battery voltage, new starter, won’t start in neutral, even replaced Main relay ) so it sounds like either ignition key lock, switch or ECM. Pray that it’s not ECM. I tend to agree with you. Thanks again friend.

It’s not an ECM.

Thanks again friend, that’s comforting to know it’s perhaps the ignition switch or ignition key lock .

Did you ever find the issue?? I'm having the same problem on my 89 Civic. Intermittently goes completely dead. No crank, no power, no dash lights, no dome light, no emergency flashers. Then the next day it starts right up like there's nothing wrong. Help!!