{"product_id":"banhao-12v-car-horn-kit-with-button-relay-harness-130db-dual-high-output-weather-resistant","title":"banhao 12V Car Horn Kit with Button \u0026 Relay Harness — 130dB Dual High-Output, Weather-Resistant","description":"\u003cp\u003e\u003cstrong\u003eBANHAO's 12V Car Horn Kit is a complete plug-and-play horn system with a dedicated button and relay harness that delivers a sharp 130dB warning tone for any 12V vehicle.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis kit bundles everything needed to upgrade a factory horn: two high-output horns, a matched relay harness for safe power delivery, and an independent switch button harness for convenient on\/off control. Built for reliability, the horn assembly uses a resonant cavity and reinforced diaphragm to produce a deeper, longer-carrying sound than thin disc-style horns, while weather-resistant materials and a sturdy mounting bracket make it suitable for road, marine, and off-road use.\u003c\/p\u003e\n\n\u003ch3\u003eHow loud is this horn and where will I notice the difference?\u003c\/h3\u003e\n\u003cp\u003eThe BANHAO horn produces about 130dB, significantly louder and clearer than most stock horns. Its focused tone is engineered to cut through traffic noise and ambient sound so other road users can recognize your signal quickly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeasured peak around 130dB for immediate attention\u003c\/li\u003e\n  \u003cli\u003eSpiral resonant cavity for deeper, more penetrating tone\u003c\/li\u003e\n  \u003cli\u003eTwo-horn set creates fuller soundstage than single-disc horns\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs installation difficult and will it harm my vehicle's electrical system?\u003c\/h3\u003e\n\u003cp\u003eInstallation is intended to be straightforward: the package includes a pre-wired relay harness that manages current and protects the vehicle’s original circuits. The separate switch harness gives you on\/off control without cutting into factory wiring, keeping the installation reversible and safe.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMatched relay harness prevents overload and stabilizes current\u003c\/li\u003e\n  \u003cli\u003eDedicated switch harness avoids modifying factory circuits\u003c\/li\u003e\n  \u003cli\u003eBasic hand tools and 12V connection knowledge required—no air compressors or extra plumbing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this horn withstand adverse weather and regular road use?\u003c\/h3\u003e\n\u003cp\u003eYes — the components are housed in reinforced ABS and sealed with upgraded waterproof materials to resist moisture, dust, and salt exposure. Corrosion-resistant mounting hardware and a durable diaphragm help the horn maintain consistent output over time in varied climates.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWeather-resistant housing and seals for wet conditions\u003c\/li\u003e\n  \u003cli\u003eRobust ABS and metal bracket for vibration and impact resistance\u003c\/li\u003e\n  \u003cli\u003eHigh-performance diaphragm designed for long service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles are compatible with this banhao horn kit?\u003c\/h3\u003e\n\u003cp\u003eThe kit is engineered for universal 12V systems, making it suitable for most cars, trucks, SUVs, motorcycles, and many marine and off-road applications. Its wiring harness and mounting bracket are designed to adapt to common vehicle layouts without major modifications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits standard 12V cars, trucks, SUVs, and motorcycles\u003c\/li\u003e\n  \u003cli\u003eAlso suitable for boats, yachts, buses, and off-road vehicles\u003c\/li\u003e\n  \u003cli\u003eAdjustable bracket fits varied mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Drivers and fleet operators who want a louder, more reliable horn without complex installation — including commuters, commercial vehicle owners, off-road enthusiasts, and small boat operators. If you need a durable, weather-ready upgrade that preserves your vehicle's electrical integrity and gives you an unmistakable warning tone, the BANHAO 12V Car Horn Kit offers a practical, plug-and-play solution.\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: Does the kit include a relay and switch?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The package includes a matched relay harness and an independent switch button with wiring for plug-and-play installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this work on a motorcycle or boat?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The horn is compatible with standard 12V electrical systems, suitable for motorcycles, cars, trucks, and many marine applications.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"banhao","offers":[{"title":"Default Title","offer_id":48086353150110,"sku":"B0B5H1G3Q7","price":49.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/banhao-front-view-dual-horn-kit.jpg?v=1785896049","url":"https:\/\/northtrailauto.ca\/products\/banhao-12v-car-horn-kit-with-button-relay-harness-130db-dual-high-output-weather-resistant","provider":"North Trail Auto","version":"1.0","type":"link"}