--- product_id: 287921885 title: "12V Horn Wiring Harness Relay Kit Compatible with Car Truck Grille Mount Blast Tone Horns (Actual Horn Not Included)" brand: "ijdmtoy" price: "1856130₫" currency: VND in_stock: true url: https://www.desertcart.vn/products/287921885-12v-horn-wiring-harness-relay-kit-compatible-with-car-truck store_origin: VN region: Vietnam --- # 12V DC, 30-40AMP heavy-duty relay Dual metal contact outputs for reliable connection In-line safety fuse for ultimate power protection 12V Horn Wiring Harness Relay Kit Compatible with Car Truck Grille Mount Blast Tone Horns (Actual Horn Not Included) **Brand:** ijdmtoy **Price:** 1856130₫ **Availability:** ✅ In Stock ## Summary > 🚗⚡ Amplify your ride’s voice with power and precision! ## Quick Answers - **What is this?** 12V Horn Wiring Harness Relay Kit Compatible with Car Truck Grille Mount Blast Tone Horns (Actual Horn Not Included) by ijdmtoy - **How much does it cost?** 1856130₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/287921885-12v-horn-wiring-harness-relay-kit-compatible-with-car-truck) ## Best For - ijdmtoy enthusiasts ## Why This Product - Trusted ijdmtoy brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Battery Direct Power:** Draws power straight from the battery to prevent strain on your vehicle’s original wiring, boosting reliability. - • **Built-In Safety Fuse:** Protects your vehicle’s wiring from overload, ensuring worry-free power management. - • **Dual Output Versatility:** Trigger two high/low tone horns simultaneously for that commanding presence on the road. - • **Powerhouse Relay Control:** Handles up to 40AMP to keep your horns blasting loud and clear without fail. - • **Universal Fit & Easy Install:** Pre-wired harness designed for seamless integration with most 12V horn systems—no electrician needed. ## Overview The iJDMTOY 12V Horn Wiring Harness Relay Kit is a robust, pre-wired 4-pin SPST relay system designed to safely power high wattage car and truck horns. Rated for 12V DC and up to 40AMP, it features dual metal contact outputs and an in-line safety fuse, ensuring reliable, overload-protected operation. Compatible with most 2-contact horns, this kit simplifies installation while enhancing your vehicle’s horn performance by drawing power directly from the battery. ## Description iJDMTOY 12V Horn Wiring Harness Relay Kit Compatible with Car Truck Grille Mount Blast Tone Horns (Actual Horn Not Included) ## Features - One relay wiring harness set includes a 4-pin SPST relay module box, in-line safety fuse box, input +/- terminals, two terminals for triggering and dual metal contact outputs for reliable and efficient electrical connections - The pre-wired SPST 4-pin electrical relay unit, complete with socket and rated at 12V DC with a maximum of 30-40AMP, is ideal for most heavy duty electronic devices, light applications between 9-16V DC, with a wattage not exceeding 160W - Two-wire universal fit inptut trigger, with dual outputs, good for most 2-contact horns such as Hella 003399801 Supertone and many other aftermarket high/low tone horns - Perfect for power management, this relay harness is ideal for applications like high wattage horns drawing power directly from the battery to prevent excessive load on the vehicle’s existing wiring system and ensuring safe, easy on/off operation - Installation tips: connect output contacts to up to two pieces of supertone horns, attach red/black O-ring/C-ring to battery +/- or ACC/accessory 12V+/ground, route the signal triggering wires to origial horn sockets ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00XM107FC | | Best Sellers Rank | #175,362 in Automotive ( See Top 100 in Automotive ) #780 in Automotive Replacement Electrical Wiring Harnesses | | Brand | iJDMTOY | | Coil Voltage | 12 Volts (DC) | | Connector Type | Wire Terminals Or Spade Connectors | | Contact Type | Normally Open | | Current Rating | 30 Amps | | Customer Reviews | 4.1 4.1 out of 5 stars (1,287) | | Date First Available | May 13, 2015 | | Is Discontinued By Manufacturer | No | | Item Weight | 9.5 ounces | | Item model number | For Repair, Conversion, Custom Retrofit | | Manufacturer | iJDMTOY Auto Accessories | | Manufacturer Part Number | AA1147 | | Minimum Switching Voltage | 12 Volts (DC) | | Mounting Type | Socket Mount | | OEM Part Number | Compatible with Subaru Impreza WRX STI and more 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 | | Operation Mode | Manual | | Product Dimensions | 2.17 x 7.87 x 6.02 inches | | Voltage | 12 Volts | ## Product Details - **Connector type:** Wire Terminals Or Spade Connectors - **Contact material:** Copper - **Contact type:** Normally Open - **Mounting type:** Socket Mount - **Brand:** iJDMTOY ## Images ![12V Horn Wiring Harness Relay Kit Compatible with Car Truck Grille Mount Blast Tone Horns (Actual Horn Not Included) - Image 1](https://m.media-amazon.com/images/I/81t6zpVTxwL.jpg) ## Questions & Answers **Q: Would this work for an installation on a 2006 Honda Recon 250?** A: Yes **Q: Does this relay work with the hella horns or is this the same relay that comes with the hella horn?** A: This relay does NOT work with Hella horns, I tried to use it to install them on my Subaru and they did not function at all. go with this. https://www.rallysportdirect.com/fits/2010-subaru-impreza-wrx-sti-special-edition-hatchback-2-5/horns/grm-040005-grimmspeed-wiring-harness-for-hella-horns?gclid=CN-Y9t6tss4CFcZahgodee8AYQ **Q: : Does the relay delay the new horns and just play the OEM horn if you just hit the horn button?** A: Are you leaving the OEM in as well? I replaced the OEM one with the dual blast ones and they worked fine with no delay **Q: at the time i ordered this i did not know it did not come with a relay harness... does anyone know a harness i can get that is compatible? /w 2 relay?** A: iJDMTOY (1 12V Horn Wiring Harness Relay Kit Compatible with Car Truck Grille Mount Blast Tone Horns - COMES WITH A RELAY. This one fits all Subaru models. But harnesses without relay should work as well. I bought it with a relay for better performance and to protect the Hella horns. PS. Water and humidity will rust the relay connectors. I strongly recommend to apply a small amount of dielectric grease on all connector pins before installing. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/287921885-12v-horn-wiring-harness-relay-kit-compatible-with-car-truck](https://www.desertcart.vn/products/287921885-12v-horn-wiring-harness-relay-kit-compatible-with-car-truck) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-16*