You're right, I can't be 100% certain. I can only say it started, ran fine last night. This morning, I changed out the fuse block, which involved taking all the wiring harness connectors off and putting them back after the exchange. Fuse block is from a used vehicle so may not be perfect, but all the blade fuses are ok. I say ignition because it must be an electrical problem. Cranks fine. No codes thrown. I'm thinking now of just changing the fuse block back to the old one. There are a few issues that i assumed were tied to that accessory relay, (power windows, mirrors, sunroof don't work) but none of those were solved. All I've accomplished is causing the car to not start.