Cable Assembly vs. Wire Harness: What’s the Difference? Cable Assemblies and Wire Harnesses Are Often Confused For Being The Same thing.Cable Assembly vs. Wire HarnessThe Wire HarnessThe Cable AssemblyThe confusion is understandable since many professionals use the terms interchangeably and the products themselves have very similar basic functions. Yet these products are very different from each other, as is their purpose, which means definitions need to be made in order to help people get the products they need. This is a brief explanation of cable assembly vs. wire harness, and how each product is used out in the world.See more on meridiancableassemblies Wire Harness Assy, Wire Harness Assy Suppliers and Alibaba offers 629 wire harness assy products. About 38% of these are construction machinery parts, 6% are machinery engine parts, and 1% are other auto engine parts. A wide variety of wire harness assy options are available to you, such as diesel, gasoline.