Dual Electric Fan Relay Wiring Harness & Switch Kit

Dual Electric Fan Relay Wiring Harness & Switch Kit

Keep dual‑fan configurations cool with precise, temperature‑driven control. Aeroflow Performance’s Dual Thermo Fan Relay Wiring Harness & Switch Kit delivers reliable high‑current switching while protecting your electrical system from voltage sags and amperage overloads, making it a smart choice for performance builds and everyday vehicles alike.

• Dual 12V, 40A relays provide robust switching for high‑current fan operation.
• Two 30A circuit breakers isolate faults to prevent electrical issues from affecting the entire system.
• 3/8" NPT temperature probe activates at 85°C and deactivates at 76°C, delivering hysteresis for stable, responsive cooling.
• Pre‑wired relay block and complete crimp fittings included—no guesswork or extra parts needed for installation.
• Universal compatibility with various electric fan configurations, ideal for performance builds and everyday driving.

How it works: The 3/8" NPT temperature sensor monitors coolant temperature and triggers the dual relays to power the two fans when the engine reaches the activation threshold. As cooling brings the temperature down to the deactivation point, the circuit disengages. The result is consistent cooling when you need it most, with built‑in protection to prevent voltage drops and amperage overloads from affecting other electrical components.

Why choose this kit: If you’re upgrading a vehicle with two electric fans, this harness provides dedicated, temperature‑controlled cooling without compromising electrical integrity. The pre‑assembled relay block and complete crimp fittings streamline install, while the universal design ensures compatibility across a wide range of fans and applications.