This state of the art fan control system includes a weather proofed and under hood rated solid state pulse width modulation controller, 3/8 NPT threaded temperature sensor, large gauge fan wires and a labeled vehicle integration wire harness, mounting hardware and weatherproof circuit breaker and connectors. The F5 Dual Fan Controller is rated to control two 35 Amp cooling fans. Controller features include stepped fan control such as controlling fan #1 from 50% up to 99% and then bringing in fan #2 if more cooling is needed or the A/C is kicked on. Kit includes a three position toggle switch that give you manual control of the cooling fans; position one is 100% fan on, position two is normal operation and position three is 0% fan or fan off. Also included is a push button switch which is used to set the vehicle speed at which you like the cooling fans to shut off above. See illustrated installation manual for more information.