Fuses: Device used as electrical protection. It limits the electrical current that flows through a circuit.
They can be identified with a number that states the maximum current they can withhold. Once this current is surpassed (due to an overload or a short-circuit), the fuse breaks down and interrupts the flow of the current. The location and function of each fuse is stated in the owner's manual of the car or in the plastic lid of the fuse box.
My passenger window stopped working I switched out the switch on the driver side window and the passenger side window now both windows are not working after my boyfriend use a tester and poked it in the wrong spot and the fuse box sparked there is no burnt out fuses can the relay number two under the dash gets very very hot not sure what's going on how to roll my windows up somebody help