Cooling Fan Relay Kit: Installation Guide Car Wiring Diagram

Author Dalbo 03 Apr 2026

We cover wiring diagrams, tools, and how to avoid common mistakes If you purchase our relay kit, all. Installing an electric fan relay kit is a straightforward process that can significantly enhance your vehicle’s cooling system

A visual guide to wiring a cooling fan relay

Cooling Fan Relay Kit: Installation Guide Car Wiring Diagram

This electric fan relay kit will operate a dual fan setup, not to exceed 30 amps each The red wire from our relay connects directly to the cooling fan, and the black wire from the cooling fan connects to ground, both wires will utilize our supplied fan harness The relays will activate the electric fans if the thermostat reaches 195°f or if the a/c compressor clutch is engaged.

Please read the instructions entirely before cutting or installing this kit

There are several areas that will need to be taken into consideration, such as the location of the relay, circuit breaker and routing of. These instructions will show you how to properly install the relay and harness for our performance cooling fans Our fan relay kit can be directly installed on any vehicle with simple connections. A comprehensive guide to wiring a car fan relay, covering everything from preparation to testing

Learn how to ensure proper installation and avoid. The fan controller should be mounted close enough to the electric fan, the battery, and the temperature sensor location for the wires to reach Mount it high in the engine bay to keep it away from road. Park the vehicle in a well lit area, on level ground and apply the parking brake

Relay Wiring Diagram For Dual Fans - Wiring Diagram

Only work on a cold vehicle that has been sitting overnight, failure to do so will result in severe burns and injury.

Learn the best electric fan for a radiator and type to use for your build Straight or curved blade, single or dual fan, and more!. I would recommend adding installation & wiring diagram for average user I am a retired journeyman diesel mechanic so i knew how to install without installation instructions.

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