Review on 🔌 ONLINE LED STORE 7-Way Blade to 4-Way Flat Trailer Adapter: Nickel-Plated Copper Terminals, Rugged Nylon Housing, Compact Design, 7-pin to 4-pin Wiring Plug by James Small

This trailer light adapter did not work right out of the box. The packaging looked great, the device felt solid, but it just didn't work. It plugged into both the car's outlet and the trailer's plug, as intended, but no power was being sent to the trailer's headlights. Since it was so cheap I didn't contact the seller. It was easier to just go to an auto parts store and buy another one that I could return immediately if needed, but this one worked great. I would not buy this product again.