A fusible link is a protective device used in an electrical circuit and acts very much like a standard fuse. The major difference lies in that fusible links are larger and capable of conducting a higher amperage than most fuses. When the current increases beyond the rated amperage for a given link, the fusible metal of the wire link will melt, thus breaking the electrical circuit and preventing further damage to any other components or wiring. Whenever a fusible link is melted because of a short circuit, correct the cause before installing a new one. Most models have four fusible links.
REPLACING FUSIBLE LINKS
- Disconnect the negative battery cable, followed by the positive cable. If the link is connected to the junction block or starter solenoid, disconnect it there as well.
- Cut the wiring harness right behind the link connector(s) and remove.
- Strip the insulation off the harness wire back 1 / 2 in (12.7mm).
- Position the clip around the new link and wiring harness or new connector and crimp it securely. Then, solder the connection, using rosin core solder and sufficient heat to guarantee a good connection. Repeat for the remaining connection.
- Tape all exposed wiring with electrical tape or use a heat shrink tube, if available. Where necessary, connect the link to the junction block or started solenoid. Reconnect the positive, followed by the negative battery cables.