Fusible Links

Some circuits use fusible links, or fuse links, for overload protection. Toyotas can have as many as six fusible links protecting circuits for charging, starting, ignition, and certain accessories. Check the "Power Source" page in the Electrical Wiring Diagram manual for the specific vehicle.

A fusible link is a short length of smaller gauge wire installed in a circuit with larger conductors. High current will melt the link before it melts the circuit wiring. Such fuse links have special insulation that blisters or bubbles when the link melts. A melted link must be replaced with one of the same size after the cause of the overload has been identified and the problem corrected.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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