Aug 8, 2016 · The cooling fan relay takes the low voltage signal and internally switches the relay “on” to allow battery voltage to be supplied to the radiator cooling fan. By using a lower voltage signal to control the relay, there is less stress on the rest of the wiring and charging system.

When the pressure has dropped to a certain level, this switch deactivates the clutch to prevent it from engaging and stopping the operation of the A/C compressor to avoid potential damage.

Route the YELLOW 18 gauge wire to the ignition switch or an auxiliary “fan switch” if you are independently switching the fan system. Get expert guidance on installing a thermostatically controlled electric fan relay with these instructions. This diagram is for single or multi-fan setups.

Dual Electric Fan Relay Kit 40 AMP Automotive Relay Thermostat Switch Kit for Radiators Fans Temperature Sensor Switch 185 On 175 Off, 12V Electric Cooling Radiator Fan Relay Switch Wiring Kit

Electric Fan Relay Kit 40 AMP Automotive Relay Thermostat Switch Kit for Radiators Fans Temperature Sensor Switch 185 On 175 Off, Waterproof 12V Electric Cooling Fan Relay Switch Wiring Kit

Nov 6, 2023 · This item: Ronybuy Dual Electric Fan Relay Kit 40 AMP Automotive Relay Thermostat Switch Kit for Radiators Fans Temperature Sensor Switch 185 On 175 Off, 12V Electric Cooling Radiator Fan Relay Switch Wiring Kit. These items are shipped from and sold by different sellers. Features:

Oct 17, 2023 · By taking a low voltage signal and internally switching ON the relay, the cooling fan relay allows for the supply of battery voltage to the radiator cooling fan. When the engine temperature reaches unsafe levels, the car’s temperature switch powers ON the cooling fan relay.

Oct 16, 2024 · Typically, the radiator fan relay receives signals from the engine control unit (ECU) or temperature sensor, which determines when the fan should turn on and off. The relay acts as a switch, allowing the electric fan motor to draw power from the battery to function.

There are two methods to wire the relay, one with manual control and one with automated control. Purchase a 4-post relay with a 30-amp rating. Locate the relay in immediate proximity to the fan being used. Find a spot to secure the relay with a screw or a bolt.

This video shows how to easily wire an electric radiator fan circuit into any car. This fan wiring diagram includes a fan relay, a temperature switch, and a manual on/of switch that...