{"product_id":"zozomotors-dual-electric-fan-relay-kit-40a-185-f-temp-switch-complete-2-fan-wiring-harness","title":"ZOZOMOTORS Dual Electric Fan Relay Kit 40A — 185°F Temp Switch, Complete 2-Fan Wiring Harness","description":"\u003cp\u003e\u003cstrong\u003eZOZOMOTORS Dual Electric Fan Relay Kit is a complete 40 amp wiring harness with an OE-style temperature switch that automatically engages two cooling fans around 185°F and turns them off near 175°F.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis all-in-one relay kit supplies the relays, labeled wiring, temperature sensor, hardware and fuse protection needed to add or replace an electric dual-fan setup on cars, trucks, and custom cooling projects. Built to fit medium- and low-profile fans (and adaptable for larger loads with heavier wiring or our heavy-duty kit), the assembly simplifies installation with color-coded leads and a clear wiring diagram. The included temp switch uses a 3\/8\" thread with a 1\/2\" adapter so you can mount it in common water jackets or the cylinder head; it must be grounded through threads to function properly.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this relay kit control two cooling fans?\u003c\/h3\u003e\n\u003cp\u003eThe kit uses a 40 amp relay harness paired with a thermostatic switch that closes at approximately 185°F and reopens at about 175°F, powering both fan circuits when coolant temperature rises. The harness routes fused battery power through the relay to the fan positive leads and uses ignition and sensor connections for safe operation.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e40A relay rated for dual fan operation\u003c\/li\u003e\n\u003cli\u003eColor-coded leads: RED to battery, COFFEE to fan positive, GREY to ignition, BLACK to sending unit\u003c\/li\u003e\n\u003cli\u003eInline waterproof fuse holder with fuses included for battery protection\u003c\/li\u003e\n\u003cli\u003eClear wiring diagram for straightforward connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat mounting and wiring parts are included to finish the job?\u003c\/h3\u003e\n\u003cp\u003eEverything required to wire and mount the system comes in the box: the relay, harness, temperature switch, adapter fittings, fuses, and terminal hardware. Small installation items are supplied so you won’t need extra trips to the store for basic connections.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOE-style temperature switch with 3\/8\" thread and 1\/2\" adapter\u003c\/li\u003e\n\u003cli\u003eSpade terminal for sensor, eight ring terminals, and four wire connectors\u003c\/li\u003e\n\u003cli\u003eInline waterproof fuse holder plus replacement fuses\u003c\/li\u003e\n\u003cli\u003eComprehensive wiring diagram with labeled, color-coded wires\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this kit work with my fan type and thermostat?\u003c\/h3\u003e\n\u003cp\u003eThe kit is designed for two medium- or low-profile electric fans as a direct replacement for 10\", 12\", 14\" and 16\" fans. High-profile fans or higher current draws require heavier gauge wiring or our heavy-duty relay kit to safely carry the greater load.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDirect fit for common fan sizes up to medium profile\u003c\/li\u003e\n\u003cli\u003eFor high-profile fans, use ZOZOMOTORS heavy duty relay kit P\/N 30247 or upgrade wiring\u003c\/li\u003e\n\u003cli\u003eRequires a thermostat rated 160°F or lower for proper fan cycling with supplied switch\u003c\/li\u003e\n\u003cli\u003eTemperature switch must be grounded through threads to operate correctly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this kit for? ZOZOMOTORS Dual Electric Fan Relay Kit is aimed at DIY mechanics, home garage restorers, performance tuners, and professional installers who need a reliable, plug-and-play solution to manage two electric cooling fans. It’s particularly useful when replacing worn relay assemblies, installing aftermarket fans, or converting a vehicle’s cooling system to electric fans. If you plan to run heavy-draw or high-profile fans, consider upgrading wiring or selecting ZOZOMOTORS’ heavy-duty option to ensure safe, long-term operation.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What temperatures do the fans turn on and off?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The included switch actuates fans at about 185°F and deactivates them near 175°F.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can this kit run high-profile fans?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It’s sized for medium\/low-profile fans; use heavier gauge wiring or ZOZOMOTORS P\/N 30247 for high-profile fans.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ZOZOMOTORS","offers":[{"title":"Default Title","offer_id":67586930507961,"sku":"B098X63RRS","price":96.33,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/zozomotors-front-packaging-relay-harness.jpg?v=1790497171","url":"https:\/\/redleafauto.ca\/products\/zozomotors-dual-electric-fan-relay-kit-40a-185-f-temp-switch-complete-2-fan-wiring-harness","provider":"Redleaf Auto","version":"1.0","type":"link"}