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All electrical circuits in cars have fuses that act as safety devices on their power supply. Fuses are small devices that regulate and protect all the systems in your car. Until the 1980s, vehicles used snap-in fuses with short pieces of wire in glass tubes. The wire inside the fuse would melt if the fuse received too much voltage, causing the fuse to “blow.” A blown fuse would stop the flow of electrical current to the component it regulates, preventing damage to that component.
Today, most fuses run on links that can handle the load. A fusible link wire is permanently wired into the wiring harness or circuit, preventing overload. Fusible links don’t often fail, but when they do, they can be identified by blistered insulation around the wire. Most newer vehicles have fusible link wires that can be replaced, which makes solving problems considerably easier.
Car electrical problems can be difficult to diagnose and repair. The horn fusible link is not inspected during regular servicing and is often neglected as a potential cause of horn failure. If your horn isn’t working, have one of our expert mechanics inspect the system and replace the fusible link if necessary.
If your horn is not working, you won’t be able to alert other drivers of your presence or other hazards. If you have a faulty horn fusible link wire, have it replaced as soon as possible by one of our expert mechanics.