Chevrolet Full-size Cars 1968-1978 Repair Guide

Fusible Links


A fusible link is a protective device used in an electrical circuit. When the current increases beyond a certain amperage, 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.


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Fig. Fig. 1 View of a fusible link before and after a short circuit

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Fig. Fig. 2 The fusible links can be repaired as shown

  1. Disconnect both battery cables. If the link is connected to the junction block or starter solenoid, disconnect it.
  3. Cut the wiring harness right behind the link connector(s) and remove.
  5. Strip the insulation off the harness wire back 1 / 2 ".
  7. 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.
  9. Tape all exposed wiring with electrical tape. Where necessary, connect the link to the junction block or started solenoid. Reconnect battery.