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

Easy Installation, Comes complete with everything needed to convert any Vehicles 4 Way Flat to a 7 Way Round for bigger trailer plugs. You can also very easily still use your 4 Way Flat by simply unplugging your adapter. I had to purchase due to the lack of other adapters having the mounting bracket which is very well made and extremely sturdy. I’m very satisfied with this purchase.

This item works perfectly and is literally plug and play. It is high quality and also a great value..! I compared this item at a local retail store where it is sells for double the price that it is on Amazon.

This wiring harness adapter worked great. Attached to both the trailer plug and the tow vehicle plug without difficulty. It is hard to find a 4 flat adapter with a hole for the ground and prongs for the lights which our vehicle plug took. Both ends fit just right. The adapter looks good. The harness feels like it has quality wires and appears to be made to last. I would recommend this adapter harness to anyone who is in the market for this type of connecter. Mike

Works perfect on my truck

This Nilight 4-Way Flat to 7-Way Round Blade Trailer Adapter is exactly what I needed to step up from a basic 4-pin setup to a full 7-pin connection on my truck with a factory tow package. Right out of the box, everything felt well-built and durable—no flimsy plastic or loose connections. Installation was straightforward and didn’t require any guesswork. The included mounting bracket is a big plus—it made it easy to secure the plug neatly to my hitch area so it looks clean and stays out of the way. The wiring harness length was sufficient, and the connectors fit snug with no issues. Once installed, all functions worked perfectly—brake lights, turn signals, running lights, and electric trailer brakes. That’s the key difference compared to a 4-pin, and this adapter handled it without any problems. It’s clearly designed for trucks that already have a tow package, so if you’ve got that, this is a plug-and-play upgrade. Another thing I appreciated is the weather-resistant construction. The housing feels sealed well enough to handle rain, mud, and road grime without corroding or failing over time. Overall, this is a reliable, affordable solution if you need to convert from 4-pin to 7-pin without replacing your entire wiring system. I’d definitely recommend it to anyone towing RVs or trailers that require a 7-way connection. Great value and solid performance.

No issues putting it in works great no connection issues

Makes it an easy install for vehicles that already have the four way plug, it mounts in the area of your choosing and looks like a stock part from the factory and has been on my truck for some time now and is very durable to conditions.

Great product, easy to install.

fonctionne très bien on en avais besoin rapidement, o l'a eu rapidement très content de cet achat

Funciona perfectamente con las luces inalámbrica de mi remolque 10 de 10

Worked perfectly for us. Even after hitting and running over a deer and it getting caught between the truck and trailer and disconnected. Just shook the snow and ice out of it and plugged it back in! Very pleased with the purchase.

Llego muy bien y la calidad excelente, lo volveré a comprar. No lo he usado, espero cumpla con todo

Fonctionne bien