Went to O'Reilly's to see what was causing check engine light to come on. But it wouldn't let him read it just kept saying start car and the car was running. He said that it's a fuse or relay.

My high beams work low beam are fine. Fuses are good and changed out the switch, also good.
Every map I find of my fuse panel shows my relay a 15 fuse next to low beam fuses. When I check my car the slot is there but no fuse and no receiver for a fuse like it is a different model spot. Help please

Ac control panel blinks 3 times and turns off there’s no voltage to the 10 amp ac fuse right underneath the ac compressor relay under the hood at the fuse box. Any help would be greatly appreciated

The wires behind my radio after I took my deck out sparked and my car was running while this happened and it died and I have not been able to start it ever since. One of the wires that went from my ignition switch to behind my radio was disconnected and I have no idea where it went because I let somebody else work on my car and now I'm stumped and have no idea what to do? I ran a wire from the starter relay on the fuse box under the hood to the positive on the battery to see if I can get it to turn over and run like that and it cranked but would not start