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ZOZOMOTORS

Electric Fan Wiring Kit Electric Fan Relay Kit with Thermostat Radiator Fan Sensor Switch Electric Cooling Fan Thermostat Kit Temperature Sensor Switch 185 On 175 Off, 40 AMP Waterproof Relay Kit

  • Based on 110 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, May 23
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Features

  • All wires are clearly labeled and color-coded. And an easy-to-follow wiring diagram is included in the package. RED to 12VDC positive battery terminal, COFFEE to Fan Positive, BLACK to Sending Unit, GREY to Ignition per wiring diagram. Direct replacement part fits 10, 12, 14, and 16 inch cooling fans. For dual fan wiring, you would need two of this relay kit
  • Temperature switch turns on fan approximately at 185 Degrees and Off at 175 Degrees. The temp sensor has a 3/8 inch pipe thread, and a 1/2 inch adapter included. Please note: you need to run a 160 degrees thermostat when running this kit with this temp switch. If you got a thermostat above 160 degrees (say 180 thermostat) , your engine will not get cool enough for the fan to shut off
  • This electric cooling fan kit comes with everything you need, includes 40A relay, wiring harness, temperature switch, 3/8 inch to 1/2 inch adapter, inline waterproof fuse holder, fuses, 1 spade connector for the temp sensor, 4 ring terminals and 2 wire connectors
  • The temperature switch supplied with this kit is OE style to mount in the cylinder head of the engine or any water jacket if needed. The temperature switch MUST be grounded through the threads to the engine in order for it to work, and the engine MUST be grounded
  • This relay kit is enough to run medium profile or low profile electric fan. For high profile fan, you can use ZOZOMOTORS heavy duty relay kit P/N 30247. Or crimp/solder bigger wires yourself for pin 30 & 87 to carry enough load for the fan (10 gauge wire - 30 Amps). Recommend to use dual fan relay kit to run dual fan set up

Features

  • Easy to follow wiring diagram simplify wiring your electric fans. RED to 12VDC positive battery terminal, COFFEE to Fan Positive, BLACK to Ignition, GREY to Sending Unit per wiring diagram. Direct replacement part fits 10, 12, 14, and 16 inch cooling fans. For dual fan wiring, you would need two of this relay kit
  • Temperature switch turns on fan approximately at 185 Degrees and Off at 175 Degrees. The temp sensor has a 3/8 inch pipe thread, and a 1/2 inch adapter included
  • This electric cooling fan thermostat kit comes with everything you need, includes 40A relay, wiring harness, thermostat switch, 3/8 inch to 1/2 inch adapter, inline fuse holder, 20 amp fuse, 1 spade connector for the temp sensor, 4 ring terminals and 2 wire connectors
  • The thermostat supplied with this kit is OE style to mount in the cylinder head of the engine or any water jacket if needed. The thermostat MUST be grounded through the threads to the engine in order for it to work, and the engine MUST be grounded
  • If you intend to mount high-profile fans, you could crimp or solder bigger wires to it. The 14AWG wires (15 amps) are not bigger enough for high amps draw

Current Rating: 40 Amps


Brand: ZOZOMOTORS


Operation Mode: Electric


Coil Voltage: 12 Volts


Maximum Switching Current: 40 Amps


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 6.89 x 5.51 x 1.57 inches; 7.05 Ounces


Date First Available ‏ : ‎ June 18, 2021


Manufacturer ‏ : ‎ MAXCOOLING


Best Sellers Rank: #26,572 in Automotive (See Top 100 in Automotive) #2 in Automotive Replacement Engine Radiator Cooling Fan Motor Relays


#2 in Automotive Replacement Engine Radiator Cooling Fan Motor Relays:


Customer Reviews: 4.3 4.3 out of 5 stars 110 ratings


Connector Type: Ring Terminal, Pigtail Connector


Contact Material: Copper


Contact Type: Normally Open


Current Rating: 40 Amps


Mounting Type: Chassis Mount


Connector Type: ‎Ring Terminal, Pigtail Connector


Contact Material: ‎Copper


Contact Type: ‎Normally Open


Current Rating: ‎40 Amps


Mounting Type: ‎Chassis Mount


Brand: ‎ZOZOMOTORS


Operation Mode: ‎Automatic


Wattage: ‎480 watts


Coil Voltage: ‎12 Volts


Contact Current Rating: ‎40 Amps


Lower Temperature Rating: ‎185 Degrees Fahrenheit


Maximum Switching Current: ‎40 Amps


Maximum Switching Voltage: ‎12 Volts


Minimum Switching Voltage: ‎12 Volts (DC)


Specification Met: ‎OE


Product Dimensions: ‎6.89 x 5.51 x 1.57 inches


Item Weight: ‎7.2 ounces


Manufacturer: ‎MAXCOOLING


Item model number: ‎JDQ1DG


Is Discontinued By Manufacturer: ‎No


Date First Available: ‎June 18, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, May 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Great quality!
I bought this electric fan wiring kit to upgrade my cooling system, and it worked perfectly. The kit included everything I needed — wiring, relay, fuse, and a switch — all clearly labeled and ready to go. Installation was straightforward, even for someone with basic electrical experience. The wiring is thick and well-insulated, which gives me confidence it’ll last through heat and vibrations under the hood. The relay and fuse are a nice touch for safety and protecting the electrical system. Since installing, the fan kicks on exactly when it should, keeping my engine temps stable during hot weather and heavy traffic. The switch is solid and easy to operate from inside the cab. Overall, great value and a reliable upgrade if you’re replacing a mechanical fan or adding an electric fan setup. ... show more
Reviewed in the United States on August 3, 2025 by Christopher
    • On point
Worked great, great price, even sent the link to a homie that was impressed w mine, so he could get it too
Reviewed in the United States on November 12, 2025 by Keyth Theurer
    • 12v electric fan control wire harness.
Excellent electric fan controller, pre-terminated wiring harness with sending unit, and the price was right.
Reviewed in the United States on August 24, 2025 by Chad
    • No complaints.
Good quality and came with good length of wire. Wish it cam with the fan connector, but there are several different variables for that.
Reviewed in the United States on June 26, 2025 by Donald Webb
    • It needs one more thing
This was a pretty decent kit, the only thing that would have made it 5 stars is if it came with a matching male plug for the fan connection as it comes with it's own and I had to order a match separately, but hey, it works.
Reviewed in the United States on December 11, 2025 by Taylor Poss
    • Great for the price
Works as it should. No need to buy big name brand for a fan relay. Easy installation.
Reviewed in the United States on December 25, 2025 by Jocy
    • Big improvement over factory fan for 87 samurai.
Review Image by Joshua kuntzi Joshua kuntzi
Review Image by Joshua kuntzi Joshua kuntzi
Worked perfect. MUST USE THE TEMP SENSOR INCLUDED. WILL NOT WORK WITH FACTORY TEMP SENSOR.
Reviewed in the United States on December 25, 2025 by Joshua kuntzi Joshua kuntzi
    • Wiring diagram is slightly wrong
Review Image by Jimmy Flores Jimmy Flores
Review Image by Jimmy Flores Jimmy Flores
The media could not be loaded. So wiring is wrong, you wire the gray/trigger wire to a positive to turn the relay ON unless you wire it backwards with red being the ground and black being positive then you’d be able to run it on the engine block using the thermal switch included I’m using a toggle switch to turn the relay on so hopefully it doesn’t burn my Jeep WJ down and lasts a long time I’ll make sure to wrap it up and keep it away from any moisture and dust, i dont go through mud its a daily driver and occasionally i go on trails in the Rocky Mountains so we will see how it works I’ll update this review if it ends up breaking 🤞 ... show more
Reviewed in the United States on August 9, 2024 by Jimmy Flores Jimmy Flores

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