In addition to fuses, the wiring harness incorporates fusible links (in the battery feed circuits) to protect the wiring. Fusible links are 4 in. (102mm) sections of copper wire, 4 gauges smaller than the circuit(s) they are protecting, designed to melt under electrical overload. There are 4 different gauge sizes used. The fusible links are color coded so that they may be installed in their original positions.
See Figures 1 and 2
Fusible links are usually located in the following circuits. Refer to the wiring diagrams for specific fusible link information.