Mechanics and car enthusiasts, this FASTSTORM electric fan relay kit makes upgrading your cooling system so much easier! This complete all-in-one kit includes everything you need for a professional single-fan installation. The 60 AMP waterproof relay is seriously robust and handles high current without breaking a sweat. The temperature sensor switches your fan on at 200°F and off at 185°F, keeping your engine at the perfect temperature automatically. Wiring is straightforward with color-coded wires and clear instructions - red to battery positive, blue to fan positive, and you're basically done. The temperature switch has 3/8-inch pipe threads with a 1/2-inch adapter included, so it fits most standard mounting locations. Installation is hassle-free with the complete wiring harness, inline fuse holder, 20-amp fuses, connectors, and terminals all included. Works with 10-inch, 12-inch, 14-inch, and 16-inch single cooling fans across cars, trucks, boats, and more. The OE-style temperature switch mounts in your cylinder head or water jacket and grounds through the threads for reliable operation. No more guessing about engine temperature or worrying about overheating in traffic - this kit handles cooling automatically so you can focus on driving. Perfect for replacing old mechanical fans or upgrading to more efficient electric cooling.