Cable Assembly, also known as a wire harness, wiring harness, a cable and harness electronics, wiring assembly or wiring loom, is an assembly of electrical cables or wires which transmit signals or electrical power. Cable Assemblies are often confused with Wire Harnesses, however, the two are quite different. The main difference is that cable assemblies and harnesses normally have only two ends, whereas a wire harness contains multiple breakouts (ends) that run in many different directions with multiple terminations on each breakout.