Dual Electric Fan Relay Kit with Thermostatic Sensor Switch 185 on 175 Off 40…
Dual Electric Fan Relay Kit with Thermostatic Sensor Switch 185 on 175 Off 40A Radiator Electric Cooling Fan Wiring Kit Automotive Fan Wiring Kit. [Function of waterproof fan relay kit] It shall turn your cooling fans on when the engine reaches the preset temperature of the thermostatic switch mounted in the engine head or when the A/C is turned on.