Fuse Link
Typical Fuse Link Installation:
The fuse link is a short length of insulated wire integral with the engine compartment wiring harness. It is several wire gauges smaller than the circuit it protects. The fuse link for the generator is a 12-gauge gray wire.
The fuse link is designed to burn out, thus protecting the generator and wiring, when heavy reverse current flows, such as when a booster battery is connected incorrectly, or a short to ground occurs in the wiring harness.
A burned-out link may have bare wire ends protruding from the insulation or bubbled insulation with illegible identification. If it is hard to determine if the link is burned out, perform a continuity test.
Service fuse links are brown, green or black depending on application. All fuse links have a flag moulded on the wire or on the terminal insulator. Color identification of the flag or connector for the external voltage regulator system is gray 12-gauge wire. The illustration shows fuse link installation.