Repair Pontiac Mid-size 1974-1983 Repair Guide

Fusible Links


All models are equipped with fusible links. These links are attached to the lower ends of the main supply wires and connect to the starter solenoid. One of the main wires is a No. 12 red wire which supplies the headlight circuit and the other is a No. 10 red wire which supplies all electrical units except the headlights. The links consist of wire which is several gauges smaller than the supply wires they are connected to and function as additional protection to the wiring. In the event of an overloaded or short circuited condition in that they will melt before the wiring is damaged elsewhere in the circuit. A burned out fusible link would be indicated by: all the electrical accessories dead except the headlights or headlights dead but all other electrical units operative.


  1. Disconnect the battery ground cable.
  3. Disconnect the fusible link from the junction block or starter solenoid.
  5. Cut the harness directly behind the connector to remove the damaged fusible link.
  7. Strip the harness wire approximately 1 / 2 in.
  9. Connect the new fusible link to the harness wire using a crimp on connector. Solder the connection using resin core solder.
  11. Tape all exposed wires with plastic electrical tape.
  13. Connect the fusible link to the junction block or starter solenoid and reconnect the battery ground cable.