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Purpose:
Fusible links act as high-current fuses by protecting their circuits from excessive current draw. The capacity of fusible links is usually 30 amps or more-somewhat higher than that of standard fuses. When a fusible link blows, it means that its current-carrying capacity was exceeded and the heat across the link’s conductor caused the link to melt and open the circuit.
Maintenance Tips/Suggestions:
Blown fusible links usually indicate more serious electrical circuit problems such as a short circuit or an electrical consumer that is using more current than the circuit is designed for. If the circuit problem still exists and a new fusible link is installed, the new link will also melt. The location of fusible links varies. The older, wire style of link is usually located in a wiring harness near a main harness connection and the link may have a current capacity tag attached. Fortunately, since this type of link can be tough to find, carmakers have almost altogether changed to the cartridge style fuse element or maxi fuse. These types of fusible links are located in fuse panels at various locations on the vehicle. Check your car’s owner’s manual for fuse panel locations and their specific fusible links and capacities. To get to the root cause of your car’s electrical problem, have the system diagnosed by a qualified service professional.
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