FASTSTORM Electric Fan Relay Kit 60A Waterproof with Temp Sensor 200°F On 185°F Off, Plug-and-Play Harness

The FASTSTORM Electric Fan Relay Kit is a complete 60A waterproof relay harness with an OE-style temperature switch that automatically turns a single radiator fan on at about 200°F and off at 185°F.

If you need reliable, plug-and-play fan control for a single electric cooling fan, this kit bundles the relay, wiring, temperature sensor and mounting hardware in one box. It’s built to simplify installation on cars, trucks, boats and custom projects while protecting electrical components from moisture. The kit supports common fan sizes and offers accurate thermal switching with a 3/8" thread sensor plus a 1/2" adapter for flexible mounting.

How does this kit make installing a single electric fan easier?

The FASTSTORM kit is designed for quick, straightforward wiring so you can complete a single-fan installation with minimal fuss. Clear wire colors and a simple harness reduce guesswork, and included terminals and an inline fuse holder let you finish without sourcing extra parts.

• Red wire connects to 12V battery positive for power
• Blue wire connects directly to the fan positive
• Comes with ring terminals, spade connector and wire connectors
• 60A waterproof relay protects the circuit under wet conditions

What temperature control does the sensor provide and where does it mount?

The temperature switch activates the fan at approximately 200°F and turns it off at 185°F, giving a tight hysteresis to avoid rapid cycling. The sensor uses a 3/8" pipe thread and includes a 1/2" adapter, so you can install it in a cylinder head or water jacket where it will read coolant temperature accurately.

• OE-style switch for reliable engine-mounted sensing
• 3/8" thread plus 1/2" adapter for mounting flexibility
• Requires grounding through the threads to the engine block
• Designed to minimize false triggers and short cycles

Is this kit durable enough for automotive and marine use?

Yes — the relay is rated 60 amps and housed in a waterproof case to withstand road spray, engine bay moisture and marine environments. The wiring harness is built for automotive temperatures and the inline fuse holder adds circuit protection for both fan and relay wiring.

• 60A rated relay for high-current fans up to common single-fan sizes
• Waterproof relay housing to resist corrosion and moisture
• Includes 2 x 20A fuses and an inline fuse holder for safety
• Designed to work with 10", 12", 14" and 16" single cooling fans

Will this fit my vehicle and what’s included in the box?

The kit is engineered for wide compatibility with most single-fan cooling applications across cars, trucks, and boats. FASTSTORM supplies all the connectors and adapters needed for a complete install so you won’t have to hunt for parts.

• Complete kit: waterproof 60A relay, wiring harness and temp switch
• Mounting and electrical hardware: ring terminals, spade, wire connectors
• Adapter: 3/8" to 1/2" sensor adapter for common threads
• Safety items: inline fuse holder plus 2 20A fuses

Who is this for: The FASTSTORM Electric Fan Relay Kit is aimed at DIY mechanics, professional installers and hobbyists who need a dependable single-fan control solution that’s quick to install and rugged enough for daily driving or marine use. Choose this kit when you want precise thermal control, waterproof electrical protection and a full set of parts to complete the job without extra trips to the parts store.