Cable harness

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A cable laced wiring harness installed in a component of a Tesla coil
Harness of coaxial cables.
Harness of car audio cables.
Pull test qualification of crimped end.

A cable harness, also known as a wire harness[1], cable assembly, wiring assembly or wiring loom, is an assembly of electrical cables or wires which transmit signals or electrical power. The cables are bound together by straps, cable ties, cable lacing, sleeves, electrical tape, conduit, a weave of extruded string, or a combination thereof.

Commonly used in automobiles, as well as construction machinery, cable harnesses provide several advantages over loose wires and cables. For example, many aircraft, automobiles and spacecraft contain many masses of wires which would stretch over several kilometres if fully extended. By binding the many wires and cables into a cable harness, the wires and cables can be better secured against the adverse effects of vibrations, abrasions, and moisture. By constricting the wires into a non-flexing bundle, usage of space is optimized, and the risk of a short is decreased. Since the installer has only one harness to install (as opposed to multiple wires), installation time is decreased and the process can be easily standardized. Binding the wires into a flame-retardant sleeve also lowers the risk of electrical fires.[2]


  1. ^ "How Are Wire Harnesses and Wire Assemblies Designed and Manufactured? - Meridian Cable". 3 December 2015. 
  2. ^ Ajkia, Hasse (4 May 2014). "Wire Harness and Cable Assemblies -". The Custom Wiring Loom. Retrieved 23 March 2018.