Chevrolet Silverado 1500 Automotive Wire Harness

Choosing An Automotive Wiring Harness

An automotive wiring harness carries power or signals between electrical components. Replacement harnesses are made for different circuits and positions: the selection includes lighting and backup-sensor harnesses as well as repair harnesses from more than one brand.

Start with the circuit and component being repaired. Compare the connector, terminal arrangement, harness route and vehicle equipment condition; two harnesses with similar plugs do not necessarily serve the same function.

Wires, Terminals And Harness Connections

A harness can include wires, terminals, connectors and protective covering arranged for a particular route. The connector joins the circuit to a component or another harness, while the covering helps protect the wires along that route.

Inspect for damaged insulation, loose or corroded terminals and strain at connection points. A warning light or an inoperative lamp can also involve the component, fuse or another part of the circuit, so locate the fault before choosing the repair.

Replacing Or Repairing A Wiring Harness

Some replacement parts cover a short section or connector, while others replace a larger harness section. The appropriate repair depends on where the damage extends and on the vehicle manufacturer's permitted procedure.

Route and secure the repaired harness as specified to avoid contact with hot or moving parts. Use the correct terminals and sealing method for the circuit rather than treating every connector as interchangeable.

Frequently Asked Questions (FAQ)