Elect. Fan Wiring Harnes

The BE-COOL RADIATORS Elect. Fan Wiring Harness (SKU BEC 75021.00) is a complete fan control kit designed for automotive enthusiasts and mechanics upgrading to electric cooling fans on street, race, and restored vehicles. This harness eliminates the need for improvised wiring by delivering a factory-quality control solution that manages fan engagement based on coolant temperature, reducing parasitic drag on the engine and improving fuel efficiency compared to mechanical fan clutches.

The kit includes a 40-amp relay capable of handling high-current electric fan motors, a precision temperature sensor with 3/8 inch NPT threads, a 1/2 inch NPT adapter for common radiator bosses, and pre-assembled wiring harness rated for reliable operation. The controller activates the fan at 195 degrees Fahrenheit and shuts it off at 175 degrees, preventing coolant boil-over while avoiding unnecessary cycling that stresses electrical components. This dual-setpoint design maintains optimal engine operating temperature across highway cruising, city driving, and aggressive throttle application without manual intervention or secondary switches.

Whether retrofitting a classic hot rod, upgrading a high-performance build, or improving cooling consistency on a late-model platform, the BE-COOL Elect. Fan Wiring Harness integrates seamlessly with most aftermarket electric fans rated up to 40 amps. Installation requires basic automotive electrical knowledge—routing harness to fan and battery, threading the temperature sensor into the radiator, and connecting the relay to appropriate power and ground points. Mechanics value this complete solution for eliminating guesswork and reducing labor time compared to hand-fabricating harnesses from individual components.