--- product_id: 531667978 title: "Gonice 25Ft 4 Pin Trailer Wiring Harness Extension Kit, 4-Way Flat Plug, 5-Wire Male & 4-Wire Female Connector with 18 Gauge White Ground" brand: "gonice" price: "87.33 DT" currency: TND in_stock: true reviews_count: 8 category: "Gonice" url: https://www.desertcart.tn/products/531667978-gonice-25ft-4-pin-trailer-wiring-harness-extension-kit-4 store_origin: TN region: Tunisia --- # 18-gauge pure copper wire for superior conductivity 25 ft total length for versatile reach Tin-plated & PVC coated for corrosion resistance Gonice 25Ft 4 Pin Trailer Wiring Harness Extension Kit, 4-Way Flat Plug, 5-Wire Male & 4-Wire Female Connector with 18 Gauge White Ground **Brand:** gonice **Price:** 87.33 DT **Availability:** ✅ In Stock ## Summary > 🔌 Power your trailer with confidence—connect like a pro, wherever the road takes you! ## Quick Answers - **What is this?** Gonice 25Ft 4 Pin Trailer Wiring Harness Extension Kit, 4-Way Flat Plug, 5-Wire Male & 4-Wire Female Connector with 18 Gauge White Ground by gonice - **How much does it cost?** 87.33 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/531667978-gonice-25ft-4-pin-trailer-wiring-harness-extension-kit-4) ## Best For - gonice enthusiasts ## Why This Product - Trusted gonice brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Premium Conductivity:** 18-gauge pure copper wire ensures reliable, high-performance electrical flow - • **Color-Coded Precision:** Intuitive wire colors simplify installation and troubleshooting for busy pros - • **Universal Compatibility:** Fits all standard 4-pin flat plugs and trailers under 80" wide—marine, horse, or cargo - • **Built to Brave the Elements:** Tin plating and PVC coating deliver unmatched corrosion and aging resistance—even in sea water - • **Extended Reach, Effortless Install:** 25 ft wiring harness with male & female connectors for seamless trailer setup ## Overview The Gonice 25Ft 4 Pin Trailer Wiring Harness Extension Kit features a durable 18-gauge pure copper wire with tin plating and PVC coating for superior corrosion resistance. Designed for easy installation with color-coded 4-way flat connectors, it supports trailers up to 80" wide, including marine and utility trailers. Trusted by thousands with a 4.6-star rating, this kit ensures reliable electrical connectivity in all conditions. ## Description Product description Review: A1 seller - super good price , fast delivery , good product Review: Best trailer wiring on desertcart - Works perfect, very nice thick coated cables. Solid construction. No complaints, and way better than the other garbage. Bought this twice and will by for every trailer for now on. Length is good enough for most trailers I used it for my 4x8 folding trailer with an a frame tongue and had about 4 or 5 feet left if you run it down the center of the trailer you’ll have more but I ran mine through the rails in the side. Also the 4pin connector is sheathed so if it protects your vehicle wiring harness. ## Features - Wire Length Details- Our 4-way trailer wiring harness includes 4 pin 21.65ft male & 3.94ft female extension connector and Install the accessory kit. this 25 ft trailer wiring harness is made of 18-gauge wire, designed to split at the trailer tongue and run down each side of the trailer. - Durable & Corrosion Resistant- The use of high quality pure copper wire and tin plated layer to achieve the best electrical conductivity and oxidation resistance, and the use of high quality PVC material for the best anti-corrosion and anti-aging ability. Work perfectly even with sea water. - Connect quickly- Male plug with 5 wires, female plug with 4 wires. And you can install the trailer wire so quickly and easily through the 4-way connectors and Matching installation accessories. It matches with any other standard 4 pin flat plugs. - Wire Connect Tips- Wires are color coded and bonded, Green- Right Turn Lights/Brakes, Yellow- Left Turn Lights/Brakes, Brown- Tail Lights/Running Lights, White-Ground Wire. - Wide Application- The trailer wiring harness is suitable for under 80" wide trailers, such as marine boat trailer, horse trailer and other cargo utility trailer. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BQM6YMMS | | Best Sellers Rank | #74,130 in Automotive ( See Top 100 in Automotive ) #262 in Automotive Replacement Electrical Wiring Harnesses | | Brand | Gonice | | Brand Name | Gonice | | Cable Type | Trailer Wiring Harness | | Connector Type | Flat 4-way | | Customer Reviews | 4.6 out of 5 stars 946 Reviews | | Item Weight | 0.29 Kilograms | | Manufacturer | Gonice | | Material | Copper | | Material Type | Copper | | Model | TCX-25 | | Part Number | TCX-25 | | Wire Diameter | 1.02 Millimeters | ## Product Details - **Brand:** Gonice - **Material:** Copper - **Item Weight:** 0.29 Kilograms - **Cable Type:** Trailer Wiring Harness - **Connector Type:** Flat 4-way ## Images ![Gonice 25Ft 4 Pin Trailer Wiring Harness Extension Kit, 4-Way Flat Plug, 5-Wire Male & 4-Wire Female Connector with 18 Gauge White Ground - Image 1](https://m.media-amazon.com/images/I/719Z0olQ4qL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ A1 seller *by T***F on March 19, 2026* super good price , fast delivery , good product ### ⭐⭐⭐⭐⭐ Best trailer wiring on Amazon *by K***N on October 17, 2025* Works perfect, very nice thick coated cables. Solid construction. No complaints, and way better than the other garbage. Bought this twice and will by for every trailer for now on. Length is good enough for most trailers I used it for my 4x8 folding trailer with an a frame tongue and had about 4 or 5 feet left if you run it down the center of the trailer you’ll have more but I ran mine through the rails in the side. Also the 4pin connector is sheathed so if it protects your vehicle wiring harness. ### ⭐⭐⭐⭐⭐ Wires for trailer lights *by W***S on February 12, 2026* Good product works good ## Frequently Bought Together - Gonice 25Ft 4 Pin Trailer Wiring Harness Extension Kit, 4-Way Flat Plug, 5-Wire Male & 4-Wire Female Connector with 18 Gauge White Ground Wire - Partsam 12V Submersible Square Led Trailer Light,Red White LED Stop Turn Tail License Brake Running Light Lamp for Trailers Under 80" Boat Trailer Truck Marine Camper RV Snowmobile,IP68,DOT Compliant - Hopkins 7 Blade to 4 Wire Flat Vehicle To Trailer Connector Adapter Plug, Universal Fit for Vehicles with 7 Blade Adapters (47345) --- ## 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.tn/products/531667978-gonice-25ft-4-pin-trailer-wiring-harness-extension-kit-4](https://www.desertcart.tn/products/531667978-gonice-25ft-4-pin-trailer-wiring-harness-extension-kit-4) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-24*