Where is the fusible link?

They are placed in-line between delicate harnesses and large sources of electrical current in your car—between the battery and alternator, for example. These links must transmit high-current electricity, but also protect the rest of the electrical system from dangerous spikes that could cause a fire.

Is my fusible link bad?

Diagnosis of a bad fusible link The fusible link usually resides near the battery. Search for a wire that is two gauges roughly smaller than other harnesses. If you touch the wire, you may feel it is even more rubbery than the other wires. After you find the fusible link, watch out for any blow or damage in the wire.

Where does the fusible link end in a harness?

The link may be at the very end of the harness as well, ending at a ring terminal secured to a solenoid, battery, or motor. When a fusible link does its job, it will break the circuit continuity, which is akin to cutting the wire.

How is a wire measured in a fusible link?

Wire is measured in “gauge,” often abbreviated AWG for “American Wire Gauge.” The lower the number, the bigger the wire. Bigger wires handle more current (amp) draw. Check out this cable calculator chart to learn more. Again, a fusible link’s function is very similar to a fuse. It’s designed to fail before your wiring harness melts to goo.

How to read reviews for Dorman conduct-Tite 14 gauge fusible link?

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Do you need crimp connector for fusible links?

Many fusible links now come with a crimp connector pre-installed, which simplifies the installation process. Remember to weather-proof your connections—cover your joints with heat shrink tubing or tightly wrap your connections with electrical tape. Need a good 101 tutorial on electrical wiring? Check this out.

Why are fusible links important in a circuit?

(You can read more about fuses here .) Just like a fuse, the link is designed to handle a lower current (amp) load than the rest of the system so, in the event of a short or overload, the link will be the first failure point. When it fails, it will break the continuity in the rest of the circuit, preventing damage to other components down the line.

Which is easier to install, fuse block or fusible link?

But certain automotive components require momentary higher peak current levels depending, so a fixed-rating fuse may not be ideal. Fusible links are also cheaper and easier to install than a dedicated fuse block, which is why you see them in OE applications.