A melted fusible link can be detected either by visual Inspection or by feeling with finger tip. If its condition is questionable, use circuit tester or test lamp.
1 : Fusible link
CAUTION:
If fusible link should melt, it is possible that critical circuit (power supply or large current carrying circuit) is shorted. In such a case, carefully check and eliminate cause of malfunction.
Never wrap outside of fusible link with vinyl tape. Important:Never let fusible link touch any other wiring harness, vinyl or rubber parts.