--- product_id: 526183811 title: "4 Way Flat to 7 Way Round Blade Trailer Adapter Wiring Harness" brand: "nilight" price: "£22.25" currency: GBP in_stock: true category: "Nilight" url: https://www.desertcart.co.uk/products/526183811-4-way-flat-to-7-way-round-blade-trailer-adapter store_origin: GB region: United Kingdom --- # 4-pin to 7-pin seamless power transfer Includes mounting bracket & hardware Rust-resistant, dustproof sealed cover 4 Way Flat to 7 Way Round Blade Trailer Adapter Wiring Harness **Brand:** nilight **Price:** £22.25 **Availability:** ✅ In Stock ## Summary > 🔗 Connect with Confidence, Tow with Style! ## Quick Answers - **What is this?** 4 Way Flat to 7 Way Round Blade Trailer Adapter Wiring Harness by nilight - **How much does it cost?** £22.25 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/526183811-4-way-flat-to-7-way-round-blade-trailer-adapter) ## Best For - nilight enthusiasts ## Why This Product - Trusted nilight brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rock-Solid Connection:** No wiggle-room or loose fittings—ensures reliable signal and power transfer every time. - • **Universal Compatibility:** Perfect for RVs, trucks, caravans, and semitrailers—upgrade your towing game with confidence. - • **Complete Installation Kit:** Mounting bracket, screws, and nuts included for a hassle-free, secure setup on any trailer hitch or bumper. - • **Built to Brave the Elements:** Heavy-duty plastic housing with spring-loaded cover protects against dust, moisture, and corrosion. - • **Plug & Play Power Conversion:** Effortlessly convert your 4-way flat socket to a 7-way round blade for full trailer functionality. ## Overview The Nilight 4-Way Flat to 7-Way Round Blade Trailer Adapter is a durable, easy-to-install wiring harness that converts a 4-pin flat vehicle socket to a 7-pin round blade trailer plug. Featuring a rust-resistant plastic build and a sealed cover for protection, it includes a mounting bracket and hardware for secure attachment. Ideal for RVs, trucks, and trailers, it ensures reliable power and signal transfer for turn signals, brakes, reverse lights, and auxiliary power, backed by a 2-year warranty. ## Description Nilight Trailer Plug AdapterNilight 4-Way Flat to 7-Way Round Blade Trailer Adapter with Mounting Bracket for RV Truck Factory Tow Package is made to convert 4-way flat vehicle end to 7-way blade trailer end, makes the tight connection between vehicle socket and trailer plug, no wiggle-room, no loose fittings. Transfers the power from the vehicle to the trailer. Package Included: 1 x Trailer Adapter Plug, 1 x Mounting bracket 6 screws & 6 nuts, 1 x User Manual. ## Features - Compact Traction Adapter: This adapter converts 4 way flat vehicle end to 7 way blade trailer end, makes tight connection between vehicle socket and trailer plug, no wiggle-room, no loose fittings. Transfers the power from the vehicle to trailer. - Function: 4-pin flat socket designed to be converted to the 7-pin blade round type socket. Works on most vehicle wiring component like turn signals, brakes,reverse light and auxiliary power. - Durable Construction: Heavy duty black plastic construction prevents rusting, enhances appearance. Well sealed spring loaded cover increases protection against dust, moisture and corrosion. Protects the inner contacts from rust or damage. The black wire loom keeps the wiring contained and protects the harness for long lasting use. - Easy to Install: The 4 way to 7 way trailer adapter equipped with mounting bracket, screws, and nuts,conveniently connect the trailer wiring adapter to your trailer hitch or bumper and just find the right position to install and tighten the nut to install successfully. - Wide Application: Come with 1 x Trailer Adapter Plug, 1 x Mounting bracket 6 screws & 6 nuts, 1 x User Manual. Perfect for most trailers, semitrailers, caravans, RV. Commonly used with T-connectors or tail lamp converters with 4-way flat car end connections ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BWD8F5MP | | Best Sellers Rank | #3,262 in Automotive ( See Top 100 in Automotive ) #15 in Trailer Connectors | | Brand Name | Nilight | | Cable Type | Trailer Wiring Harness | | Connector Type | 4-way Flat to 7-way Round Blade | | Customer Reviews | 4.5 4.5 out of 5 stars (672) | | EU Spare Part Availability Duration | 2 years | | Global Trade Identification Number | 00840323903363 | | Included Components | 1PC 4-Way Flat to 7-Way Round Blade Trailer Adapter | | Item Highlight | 4 Pin to 7 Pin Electrical Connect Wiring Plug Connector with Mounting Bracket for RV Truck Factory Tow Package | | Item Type Name | 4-Way Flat to 7-Way Round Blade Trailer Adapter | | Item Weight | 0.29 kg | | Manufacturer | Nilight | | Material Type | Plastic | | Model | 50303T | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | 50303T | | Recommended Uses For Product | Towing applications: connecting and transmitting power/signal (turn signals, brakes, reverse lights, auxiliary power) between tow vehicles and utility trailers, RVs, boats, campers, car carriers, semitrailers, and caravans via 4-way flat to 7-way round blade wiring adapter | | UPC | 840323903363 | | Unit Count | 1 Count | | Warranty Description | 2 Year Warranty | ## Product Details - **Brand:** Nilight - **Connector Type:** 4-way Flat to 7-way Round Blade - **Item Weight:** 0.29 kg - **Material:** Plastic ## Images ![4 Way Flat to 7 Way Round Blade Trailer Adapter Wiring Harness - Image 1](https://m.media-amazon.com/images/I/610KZWiUvsL.jpg) ## Available Options This product comes in different **Color** options. ## Frequently Bought Together - Nilight 4 Way Flat to 7 Way Round Blade Trailer Adapter Wiring Harness 4 Pin to 7 Pin Electrical Connector Wiring Plug Connector with Mounting Bracket for RV Truck Factory Tow Package,2 Years Warranty - Reese Towpower 8507111 Brakeman IV Digital Brake Control, Small Compact Design - MECMO Multi-Tow 4-Way Flat to 7-Way RV Blade and 4-Way Flat Female Trailer Wiring Adapter Connector Kit, Adapt 4-Way Flat Vehicle-Side Socket to Multiple Trailer Plugs with Mounting Bracket --- ## 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.co.uk/products/526183811-4-way-flat-to-7-way-round-blade-trailer-adapter](https://www.desertcart.co.uk/products/526183811-4-way-flat-to-7-way-round-blade-trailer-adapter) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-11-07*