--- title: "7 pin to 4 pin trailer adapter — Niche Verdict: Skip it (49/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/automotive/7-pin-to-4-pin-trailer-adapter" last_updated: "2026-07-10T01:11:38.333Z" locale: en meta: description: "strong incumbent ratings (4.7★) — 7 pin to 4 pin trailer adapter doesn't clear our bar today." "og:description": "strong incumbent ratings (4.7★) — 7 pin to 4 pin trailer adapter doesn't clear our bar today." "og:title": "7 pin to 4 pin trailer adapter — Niche Verdict: Skip it (49/100) | Amazon United States - Flapen" --- Back to Flapen home # **7 pin to 4 pin trailer adapter** **Skip it****49/100 ** strong incumbent ratings (4.7★) — 7 pin to 4 pin trailer adapter doesn't clear our bar today. **Market/yr** **$554K** **Growth (1y)** **+188.1%** **Products** **16** **Brands** **11** was 13 a year ago **Sellers** **15** **Price range** **$6.49–$23.99** **Returns** **2.6%** **Rating** **4.7★** **Skip it** Scored 49/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **26** ×0.30 Growth **75** ×0.30 Competition **39** ×0.20 Quality gap **25** ×0.10 Returns **79** ×0.10 ## **Demand** Weekly Amazon search volume, last 104 weeks — +188.1% year over year. 13K7KSpike '26Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26 ## **Seasonality** Monthly demand index across the year — 1.00 is average. JFMAMJJASOND Peak months: Apr, May, Jun · busiest ÷ quietest = 2.3× ## **Competition** - Oyviny40% - Agrieyes12% - Nilight12% - BFXM8% - Jiomrzo7% - AutoSonic5% - Other (5 brands)15% The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them. 11 brands and 15 sellers compete here. **Brands** **11 **▼falling was 13 a year ago **Sellers** **15** **Top 5 brand share** **79%** #ProductBrandPriceRatingReviewsClick shareTrend 1 ![Oyviny 7 Pin Round to 4 and 5 Pin Flat Blade Trailer Adapter 7 Way to 5 Way Trailer Plug Adapter 2-in-1 Design](https://m.media-amazon.com/images/I/51qFTsyLNtL.jpg) [**Oyviny 7 Pin Round to 4 and 5 Pin Flat Blade Trailer Adapter 7 Way to 5 Way Trailer Plug Adapter 2-in-1 Design**](https://www.amazon.com/dp/B08MDW63DH) Oyviny$10.324.7★2,39029%▼falling 2 ![Agrieyes Premium 7 Pin to 4 Pin Trailer Adapter 7 Way Blade to 4 Way Flat Trailer Plug Waterproof Connector for RV Truck Caravan Utility Tow Vehicles](https://m.media-amazon.com/images/I/41vHeds2t5L.jpg) [**Agrieyes Premium 7 Pin to 4 Pin Trailer Adapter 7 Way Blade to 4 Way Flat Trailer Plug Waterproof Connector for RV Truck Caravan Utility Tow Vehicles**](https://www.amazon.com/dp/B0CQXXKHNQ) Agrieyes$8.204.5★91712%▼falling 3 ![Oyviny 7 Way to 4 Way Trailer Plug Adapter RV Blade 7 Pin Round to 4 Pin Flat Trailer Light Adapter 11.6 Inches](https://m.media-amazon.com/images/I/310fLOMp1IL.jpg) [**Oyviny 7 Way to 4 Way Trailer Plug Adapter RV Blade 7 Pin Round to 4 Pin Flat Trailer Light Adapter 11.6 Inches**](https://www.amazon.com/dp/B0BPXR7RTW) Oyviny$15.454.7★6359%▲rising 4 ![Jiomrzo 7 to 4 & 5 Pin Trailer Light AdapterConvenient 2-in-1 Design Trailer Plug Adapter Upgraded Weatherproof 7 Way to 4 Way & 5Way Trailer Connector for RV Truck Utility Tow Hitch Boat](https://m.media-amazon.com/images/I/410gugHZ3VL.jpg) [**Jiomrzo 7 to 4 & 5 Pin Trailer Light AdapterConvenient 2-in-1 Design Trailer Plug Adapter Upgraded Weatherproof 7 Way to 4 Way & 5Way Trailer Connector for RV Truck Utility Tow Hitch Boat**](https://www.amazon.com/dp/B0FY2NZM4H) Jiomrzo$6.494.7★1467%▲rising 5 ![Nilight 7 Way to 4-Way Flat Blade Trailer Adapter Waterproof Rugged Nylon Housing 7 Pin to 4-pin Wiring Connector](https://m.media-amazon.com/images/I/31IP1HCmOJL.jpg) [**Nilight 7 Way to 4-Way Flat Blade Trailer Adapter Waterproof Rugged Nylon Housing 7 Pin to 4-pin Wiring Connector**](https://www.amazon.com/dp/B07RBJX6X3) Nilight$8.064.6★8857%▼falling 6 ![AutoSonic 7 Pin Blade to 4 Pin Flat Trailer Adapter | Female Trailer Connector Plug | 7 Way to 4 Way Converter | Flat Connection | Weatherproof Design](https://m.media-amazon.com/images/I/4137ZOSiuLL.jpg) [**AutoSonic 7 Pin Blade to 4 Pin Flat Trailer Adapter | Female Trailer Connector Plug | 7 Way to 4 Way Converter | Flat Connection | Weatherproof Design**](https://www.amazon.com/dp/B07L8HJGXC) AutoSonic$7.484.5★1,4015%▲rising 7 ![Nilight 4 Way Flat to 7 Way Round Blade Trailer Adapter Wiring Harness 4 Pin to 7 Pin Electrical Connect Wiring Plug Connector with Mounting Bracket for RV Truck Factory Tow Package](https://m.media-amazon.com/images/I/417qiVI1c-L.jpg) [**Nilight 4 Way Flat to 7 Way Round Blade Trailer Adapter Wiring Harness 4 Pin to 7 Pin Electrical Connect Wiring Plug Connector with Mounting Bracket for RV Truck Factory Tow Package**](https://www.amazon.com/dp/B0BWD8F5MP) Nilight$14.344.7★5775%▼falling 8 ![MaxxHaul 70086 7-Way Round to 4-Way Flat Trailer Plug Adaptor with 18 Inch Flexible Cable Which Extends To 36 Inches Red](https://m.media-amazon.com/images/I/31vkVLVR8JL.jpg) [**MaxxHaul 70086 7-Way Round to 4-Way Flat Trailer Plug Adaptor with 18 Inch Flexible Cable Which Extends To 36 Inches Red**](https://www.amazon.com/dp/B008CE0W8Q) MAXXHAUL$14.004.6★2,5824%—flat 9 ![OPT7 7 Pin to 4 Pin Trailer Adapter w/Secure Tab 7 Way Blade to 4 Way Flat Trailer Light Connector for Pickup Truck Trailer Tow Hitch 3.75 Long x 1.75 Diameter](https://m.media-amazon.com/images/I/41YKeKsBJwL.jpg) [**OPT7 7 Pin to 4 Pin Trailer Adapter w/Secure Tab 7 Way Blade to 4 Way Flat Trailer Light Connector for Pickup Truck Trailer Tow Hitch 3.75 Long x 1.75 Diameter**](https://www.amazon.com/dp/B01M18QTHY) OPT7$9.754.6★4,7934%▼falling 10 ![BFXM 4 Pin Flat to 7 Pin RV Blade Trailer Adapter Vehicle-Side 4 Way to Trailer-Side 7 Way with Mounting Bracket for Recreational Vehicle Trailer Truck](https://m.media-amazon.com/images/I/41iQd-fq+gL.jpg) [**BFXM 4 Pin Flat to 7 Pin RV Blade Trailer Adapter Vehicle-Side 4 Way to Trailer-Side 7 Way with Mounting Bracket for Recreational Vehicle Trailer Truck**](https://www.amazon.com/dp/B0D6YJF947) BFXM$12.604.8★1444%▲rising 11 ![BFXM Trailer Plug Adapter 7 Way Round to 4 and 5 Flat Blade Trailer Connector Plug 7 to 5 Pin and 4 Pin Trailer Plug Adaptor 2-in-1 Design](https://m.media-amazon.com/images/I/31tS3j0vAiL.jpg) [**BFXM Trailer Plug Adapter 7 Way Round to 4 and 5 Flat Blade Trailer Connector Plug 7 to 5 Pin and 4 Pin Trailer Plug Adaptor 2-in-1 Design**](https://www.amazon.com/dp/B0D632H8WL) BFXM$8.024.7★1064%▲rising 12 ![Oyviny 4-Pin to 7-Way Round Blade Trailer Adapter W/Mounting Bracket 4 Way Flat to 7-Way Blade Reverse Wiring Harness Connector 16AWG Copper Wire Trailer Light Plug for RV Truck Factory Tow Package](https://m.media-amazon.com/images/I/41qwnOXF1sL.jpg) [**Oyviny 4-Pin to 7-Way Round Blade Trailer Adapter W/Mounting Bracket 4 Way Flat to 7-Way Blade Reverse Wiring Harness Connector 16AWG Copper Wire Trailer Light Plug for RV Truck Factory Tow Package**](https://www.amazon.com/dp/B0CQCXLM3N) Oyviny$15.974.6★4332%▼falling 13 ![MECMO Multi-Tow 4-Way Flat to 7-Way RV Blade and 4-Way Flat Female End Trailer Wiring Adapter Connector Kit 4 Pin Vehicle-Side Trailer Light Plug to Dual-output 7 Blade & 4 Flat with Mounting Bracket](https://m.media-amazon.com/images/I/41-aAQy+nYL.jpg) [**MECMO Multi-Tow 4-Way Flat to 7-Way RV Blade and 4-Way Flat Female End Trailer Wiring Adapter Connector Kit 4 Pin Vehicle-Side Trailer Light Plug to Dual-output 7 Blade & 4 Flat with Mounting Bracket**](https://www.amazon.com/dp/B0B19GV5RV) MECMO$23.994.6★1,8672%—flat 14 ![ONLINE LED STORE True Mods 7-Way Blade to 5-Way Flat Trailer Adapter [Nickel-Plated Copper Terminals] [Rugged Nylon Housing] [Compact Design] 7-pin to 5-pin Trailer Wiring Plug Adapter](https://m.media-amazon.com/images/I/41B4pMkd6dL.jpg) [**ONLINE LED STORE True Mods 7-Way Blade to 5-Way Flat Trailer Adapter \[Nickel-Plated Copper Terminals\] \[Rugged Nylon Housing\] \[Compact Design\] 7-pin to 5-pin Trailer Wiring Plug Adapter**](https://www.amazon.com/dp/B07G8Q4XGK) ONLINE LED STORE$8.484.7★1,2022%▲rising 15 ![ONLINE LED STORE True Mods 7-Way Blade to 4-Way Flat Trailer Adapter [Nickel-Plated Copper Terminals] [Rugged Nylon Housing] [Compact Design] 7-pin to 4-pin Trailer Wiring Plug Adapter](https://m.media-amazon.com/images/I/41htMQh3ASL.jpg) [**ONLINE LED STORE True Mods 7-Way Blade to 4-Way Flat Trailer Adapter \[Nickel-Plated Copper Terminals\] \[Rugged Nylon Housing\] \[Compact Design\] 7-pin to 4-pin Trailer Wiring Plug Adapter**](https://www.amazon.com/dp/B07G8SL947) ONLINE LED STORE$8.974.7★2,1112%▲rising **~~Showing 15 of 16 — show all ~~** ## **Product shelf** All 16 tracked products in this niche. Top sellersNewestTrending [![Oyviny 7 Pin Round to 4 and 5 Pin Flat Blade Trailer Adapter 7 Way to 5 Way Trailer Plug Adapter 2-in-1 Design](https://m.media-amazon.com/images/I/51qFTsyLNtL.jpg)**Oyviny 7 Pin Round to 4 and 5 Pin Flat Blade Trailer Adapter 7 Way to 5 Way Trailer Plug Adapter 2-in-1 Design** Oyviny**$10.32**4.7★2,390 reviews](https://www.amazon.com/dp/B08MDW63DH) [![Agrieyes Premium 7 Pin to 4 Pin Trailer Adapter 7 Way Blade to 4 Way Flat Trailer Plug Waterproof Connector for RV Truck Caravan Utility Tow Vehicles](https://m.media-amazon.com/images/I/41vHeds2t5L.jpg)**Agrieyes Premium 7 Pin to 4 Pin Trailer Adapter 7 Way Blade to 4 Way Flat Trailer Plug Waterproof Connector for RV Truck Caravan Utility Tow Vehicles** Agrieyes**$8.20**4.5★917 reviews](https://www.amazon.com/dp/B0CQXXKHNQ) [![Oyviny 7 Way to 4 Way Trailer Plug Adapter RV Blade 7 Pin Round to 4 Pin Flat Trailer Light Adapter 11.6 Inches](https://m.media-amazon.com/images/I/310fLOMp1IL.jpg)**Oyviny 7 Way to 4 Way Trailer Plug Adapter RV Blade 7 Pin Round to 4 Pin Flat Trailer Light Adapter 11.6 Inches** Oyviny**$15.45**4.7★635 reviews](https://www.amazon.com/dp/B0BPXR7RTW) [![Jiomrzo 7 to 4 & 5 Pin Trailer Light AdapterConvenient 2-in-1 Design Trailer Plug Adapter Upgraded Weatherproof 7 Way to 4 Way & 5Way Trailer Connector for RV Truck Utility Tow Hitch Boat](https://m.media-amazon.com/images/I/410gugHZ3VL.jpg)**Jiomrzo 7 to 4 & 5 Pin Trailer Light AdapterConvenient 2-in-1 Design Trailer Plug Adapter Upgraded Weatherproof 7 Way to 4 Way & 5Way Trailer Connector for RV Truck Utility Tow Hitch Boat** Jiomrzo**$6.49**4.7★146 reviews](https://www.amazon.com/dp/B0FY2NZM4H) [![Nilight 7 Way to 4-Way Flat Blade Trailer Adapter Waterproof Rugged Nylon Housing 7 Pin to 4-pin Wiring Connector](https://m.media-amazon.com/images/I/31IP1HCmOJL.jpg)**Nilight 7 Way to 4-Way Flat Blade Trailer Adapter Waterproof Rugged Nylon Housing 7 Pin to 4-pin Wiring Connector** Nilight**$8.06**4.6★885 reviews](https://www.amazon.com/dp/B07RBJX6X3) [![AutoSonic 7 Pin Blade to 4 Pin Flat Trailer Adapter | Female Trailer Connector Plug | 7 Way to 4 Way Converter | Flat Connection | Weatherproof Design](https://m.media-amazon.com/images/I/4137ZOSiuLL.jpg)**AutoSonic 7 Pin Blade to 4 Pin Flat Trailer Adapter | Female Trailer Connector Plug | 7 Way to 4 Way Converter | Flat Connection | Weatherproof Design** AutoSonic**$7.48**4.5★1,401 reviews](https://www.amazon.com/dp/B07L8HJGXC) [![Nilight 4 Way Flat to 7 Way Round Blade Trailer Adapter Wiring Harness 4 Pin to 7 Pin Electrical Connect Wiring Plug Connector with Mounting Bracket for RV Truck Factory Tow Package](https://m.media-amazon.com/images/I/417qiVI1c-L.jpg)**Nilight 4 Way Flat to 7 Way Round Blade Trailer Adapter Wiring Harness 4 Pin to 7 Pin Electrical Connect Wiring Plug Connector with Mounting Bracket for RV Truck Factory Tow Package** Nilight**$14.34**4.7★577 reviews](https://www.amazon.com/dp/B0BWD8F5MP) [![MaxxHaul 70086 7-Way Round to 4-Way Flat Trailer Plug Adaptor with 18 Inch Flexible Cable Which Extends To 36 Inches Red](https://m.media-amazon.com/images/I/31vkVLVR8JL.jpg)**MaxxHaul 70086 7-Way Round to 4-Way Flat Trailer Plug Adaptor with 18 Inch Flexible Cable Which Extends To 36 Inches Red** MAXXHAUL**$14.00**4.6★2,582 reviews](https://www.amazon.com/dp/B008CE0W8Q) ## **Reviews** What buyers praise and complain about, mined from review topics. ### **What buyers love ** **Quality-Overall**22% *“Excellent quality”* **Advertised Vs Actual Product**20% *“As advertised”* **Size-Overall**11% *“It fits securely”* **Value For Money**10% *“Great value”* **Socket/Port/Plug**6% *“Decent plug”* **Assembly/Installation**6% *“Easy Install”* **Efficiency**5% *“works as it should”* **Ease Of Use**3% *“It comes in handy”* **Strength**2% *“Solid adapter”* **Connectivity-Overall**2% *“No issues putting it in works great no connection issues”* ### **What buyers complain about ** **Size-Overall**14% *“loose fit”* **Functionality-Overall**14% *“Did not work”* **Quality-Overall**12% *“poor quality”* **Socket/Port/Plug**8% *“doesn't fit into the socket”* **Durability**8% *“Failed in 6 weeks”* **Connectivity-Overall**5% *“It isn't the truck connection either”* **Compatibility-Overall**4% *“Did not work with standard UHaul connector”* **Advertised Vs Actual Product**4% *“Nice adapter, lousy description”* **Ease Of Use**3% *“Hard to use”* **Assembly/Installation**3% *“caused unnecessary troubleshooting”* #### **Top return reasons**- Size-Overall31% - Compatibility-Overall26% - Functionality-Overall8% - Connectivity-Overall7% - Defective Material/Parts6% - Socket/Port/Plug5% - Advertised Vs Actual Product4% - Value For Money3% - Add-Ons/Attachments2% - Assembly/Installation1%