USA Harness provides the finest electrical wiring harnesses to the heavy duty commercial vehicle industry. From tagalong trailers to heavy duty off-road and military applications, our harnessing components meet and exceed industry standards.
All USA Harness wiring systems are custom designed to fit your specific application. Modular plug together harnessing eliminates cut-to-fit installation and saves labor hours. All connectors are constructed of durable virgin vinyl molding compound. Female terminals receive dielectric grease as a corrosion preventative. Harness lamp ends can be constructed to mate with any common incandescent or L.E.D. lamps.

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The most advanced molded harness connectorization available in the marketplace. Can accommodate up to ten separate circuits in one system. Extra circuits can be assigned to any function. Electrical integrity is enhanced by the use of terminals with greater contact surface area. Features integral interior "O-ring" style seal and secondary lock pin of contrasting color which assures complete sealing engagement. Keyed terminal orientation assures correct mating. (Patent No. US 6,319,039 B1)

Light-Duty to Medium-Duty harness systems accommodating up to seven circuits. All connectors designed with alignment keys and integral sealing features.

Complete control systems and harnessing for your specialized power distribution needs. We design and manufacture for a variety of customers from armored couriers to yard spotting trucks.