Many industries require the use of wiring harnesses, including but not limited to the following industries: Automotive industry: Automakers and car repair service providers need to use wiring harnesses to connect electrical and electronic devices of vehicles, such as engines, lights, audio systems, etc. Electronics industry: Electronic product manufacturers need to use wiring harnesses to connect various components on circuit boards, such as resistors, capacitors, integrated circuits, etc. Energy industry: Energy equipment manufacturers need to use wiring harnesses to connect the electrical parts of equipment such as generators, transformers, and batteries. Communication industry: Communication equipment manufacturers need to use wiring harnesses to connect the electrical parts of devices such as phones, routers, switches, etc. Medical industry: Medical equipment manufacturers need to use wiring harnesses to connect various sensors, monitors, etc. of medical equipment. Home appliance industry: Home appliance manufacturers need to use wiring harnesses to connect the electrical parts of household appliances such as televisions, refrigerators, and washing machines. Aerospace industry: Aerospace equipment manufacturers need to use wiring harnesses to connect the electrical parts of aircraft, satellites, and other equipment. Industrial automation industry: Industrial automation equipment manufacturers need to use wiring harnesses to connect the electrical parts of various sensors, actuators, and other equipment. In short, almost all industries that require electrical connections require the use of wiring harnesses.