My car would start without problems until I switched the A/C relay and the Fog Light relays in the Relay/fuse box ( Box B ) I then tried to start the car but had no power at all. I tried boosting the car and got power but the car would not start. I tried to start it again and the horn and 4 way flashers come on. I removed the fuse from for the Alarm, Horn in the passenger compartment fuse box. Still it did not start.
What are you doing?!! Nobody can make a diagnosis while you keep changing things. Put everything back the way it was. Then, tell us what the problem(s) are.