Wire harness kits in HVAC systems are used to connect various electrical components in the system, such as thermostats, motors, and sensors. The kits typically include a variety of different wires and connectors, and may also include a wiring diagram or instructions for installation. For an efficient and reliable HVAC system, the ac wiring harness is a great choice for optimal sys... https://www.partshnc.com/hvac-controls/wire-harness