FASTSTORM Dual Electric Radiator Fan Relay Kit — 60A 4‑Pin with 185°F Sensor for 10"–16" Fans

FASTSTORM Dual Electric Fan Relay Kit is a complete wiring solution that automates one or two radiator fans with a temperature sensor that turns fans on at 185°F and off at 175°F.

This kit bundles a 60‑amp heavy‑duty relay, a 4‑pin relay harness, a temperature switch, waterproof fuse holders, and clear wiring instructions so you can convert or upgrade your vehicle’s cooling fans with confidence. Designed for 10", 12", 14" and 16" fans and suitable for single or dual fan setups, the package simplifies installation and helps maintain consistent engine bay temperatures without constant monitoring.

How does this kit control radiator fans automatically?

The included temperature sensor switch monitors coolant or ambient engine bay temperature and signals the relay when the set point is reached. When temperature hits 185°F the switch closes, energizing the relay and powering the fan(s); it opens at 175°F to stop the fans, preventing unnecessary run time.

• 185°F on / 175°F off factory‑set thermostat switch
• 60A main relay capable of handling high‑draw fans or dual setups
• 4‑pin relay harness reduces wiring mistakes during installation

What components come with the kit and how do they simplify installation?

This kit contains every major electrical part you need to wire an electric fan conversion or replace an old relay assembly. A clear wiring diagram is included and the color‑coded leads indicate function—red for +12V, blue to the relay coil/fan trigger, yellow to ignition, and grey to the temperature switch—making hookup straightforward for DIYers and pros alike.

• Pre‑wired fan harness with 60A relay and 4‑pin connector
• Waterproof fuse holders and inline fuses for circuit protection
• Temperature switch, mounting hardware, and wiring diagram included

Will this work with my vehicle and fan size?

The FASTSTORM relay kit was built for broad compatibility with most aftermarket and replacement electric fans sized 10"–16" and fits cars, trucks, off‑road rigs, and marine applications where a 12V system is used. It supports single or dual fan configurations as long as total current draw stays within the relay and fuse limits.

• Compatible with 10", 12", 14", and 16" electric fans
• Suitable for single‑fan or dual‑fan installations with proper wiring
• Works on most 12V vehicles, trucks, and marine cooling setups

How durable is the kit for everyday and extreme conditions?

Components like the waterproof fuse holders and robust relay are selected to endure heat, moisture, and vibration commonly found in engine bays and marine environments. Corrosion‑resistant connections and a secure relay mounting help preserve long‑term reliability under regular driving and heavy‑duty use.

• Waterproof fuse holders protect fuses from moisture and road spray
• 60A relay rated for high current and frequent switching cycles
• Durable wiring and connectors resist vibration and heat exposure

Who is this for? FASTSTORM’s Dual Electric Fan Relay Kit is aimed at vehicle owners and mechanics who need a reliable, easy‑to‑install cooling control for electric fan conversions, radiator upgrades, or replacement of worn relays. It’s well suited for DIY enthusiasts upgrading stock fans, professional shops installing aftermarket cooling systems, and owners of trucks, performance cars, or boats that need dependable thermal control without complex custom wiring.