What does it mean when a fuse is clicking?
What does it mean when a fuse is clicking? Clicking noise in your car's fuse box is caused by a relay that is turning on and off rapidly. This can be caused by a computer failure, resistance in the ground wire for the control side of the relay or high resistance in the power supply to the control side of the relay. What happens when you put in a 20 amp fuse? However, when you put in a 20 ampere fuse, and it doesn’t blow, while a 15 ampere fuse does blow, you are pulling more current through the wires...