[Falkon240]

What aftermarket parts have you installed on the car? Suspension, interior, exterior, lighting, etc.

Chances are when you or the installer put a part in you pinched a wire and opened the wiring insulation grounding it to the chassis.

Go back over your parts and make sure nothing has been pinched or damaged.

The reason I say this is I installed a rear bumper on another one of my cars and pinched the license plate harness on the bumper support grounding it out. The circuit closure was so bad that the wires heated up and melted the insulation around the entire tail light harness.

My gas tank level sensor light turned on amongst other things because of this short circuit.