Fan Relay Kit with Thermostatic Switch

The Painless Performance 30103 Fan Relay with Thermostatic Switch is engineered to automate your vehicle's cooling system, providing factory-grade accuracy and eliminating guesswork. This kit offers inexpensive protection for electric fans and the vehicle's wire harness by supplying constant voltage and safeguarding against voltage and amperage spikes. This comprehensive kit includes a SPST 40-amp relay, a 30-amp circuit breaker for protection, and a thermostatic switch. The switch is set to activate at 185°F and deactivate at 175°F, featuring a 3/8"-18NPT thread size. For installation flexibility, a 1/2" NPT to 3/8" NPT adapter is also provided. The relay base comes with a harness, offering a 6' input and a 4' output length, along with necessary crimp-on terminals and mounting hardware for a professional installation.