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Dual Electric Fan Relay Kit with Thermostatic Sensor Switch 185 on 175 Off 40A Radiator Electric Cooling Fan Wiring Install Kit Waterproof
40A dual fan relay kit with color coded wires for easy installation (wiring diagram included in package).
Specifications:
Voltage: 12VDC
Wire Coil Power: 1.8W.
Rated Current: 40A
Protective characteristics: Waterproof Approx. 185 degree off - 175 degree on.
Type: Thermostatic Fan Kit
Fitment Type: Direct Replacement
Placement on Vehicle: Front
Material: Metal and Plastic
Length of wire: 50cm/ 19.68in
Thread size: the temperature sensor has a 3 / 8 inch (about 1.9 cm) pipe thread and contains a 1 / 2 inch (about 1.3 cm) adapter.
Direct replacement parts, suitable for 10 inches (about 25.4 cm), 12 inches (about 30.5 cm), 14 inches (about 35.5 cm) and 16 inches (about 40.46cm)
usage method:
Connect the color coded wires according to the chart (product picture 2) and the following notes:
Red - to + 12VDC
Coffee - positive to fans
Black - ignition Gray - sending unit
Fitment:
10", 12", 14" and 16" fans including dual fans.
We suggest using one separate relay wiring kit for each fan.
The thermostat supplied with this kit is OE style and can be installed on the cylinder head of the engine or any water jacket.
Do not use adhesive tape on the sensor, which may lead to poor electrical contact or incorrect temperature reading.
If you plan to install a high configuration cooling fan, you can crimp or weld larger wires.
1.5 square wires (15 Amps) are not large enough to withstand the extraction of high amps
No. 12 -20 Amps
No. 10 - 30 Amps
No. 8 - 40 Amps
The package includes:
1 x wiring diagram
2X 40A relay with harness
1 x 185'f switch - 175'f temperature switch
1 x 3 / 8 inch threaded probe
1x 3 / 8-inch to 1 / 2-inch adapter
2x inline fuse holders
2 x 20 amp fuse 8x ring terminals
4x fan tail connectors
tony
2025-09-07 14:35:28
For what it was intended for
Hotrod fanatic
2025-09-05 13:58:11
The relays are working as expected. However the true temp the switch turns them on at is 195. I needed cooler temp which was the original problem. Being old school. I worry about temp. Now to wait and see if they decide to correct the problem or if I am just stuck to buy a switch that is what it is suppose to be. Will update after they respond to the review.
RICHARD THOMPSON
2025-07-24 11:19:24
I liked the price and I haven’t driven many miles yet, but they are working good. Time will tell how long they last
Hannah
2025-05-16 21:57:50
Very crappy relAys these went out with in 40 days of them being on truck. Had to buy more at part store.
Charles d.
2025-02-07 15:33:13
kit great price Great
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