1、Easy Installation: This cooling fan thermostat kit comes with a NPT 3/8in thread, easy to install, no need to spend hours tinkering, ideal for individuals and professional mechanics. 2、Practical Kit: The kit includes everything you need to connect your fan, including a brass adapter for installing the sender unit, necessary wiring harness, relay switch, circuit breaker, terminals, and installation screws. 3、Precise Temperature Control: The fan relay kit features a temperature sensor switch that is set to open the electric fan at a temperature of 185 Fahrenheit and close it at 175 Fahrenheit. It is compatible with any 12V system, giving you superior temperature control and preventing overheating. 4、Premium Materials: Made of plastic and metal material, this fan wiring kit is sturdy and resistant to rust, wear and tear, ensuring long lasting performance for years to come. 5、Versatile Application: Designed to offers a universal fit, the wiring relay kit is suitable for a wide variety of DC12V vehicles. It delivers optimal performance and greatly increases the efficiency of your vehicle's cooling system.