Oyviny 7 Way Blade to 4 Way Flat Trailer Adapter + 7 Way Blade & 5/4 Pin Trailer Light Circuit Tester

For long-lasting use, this 7 blade RV trailer tester is made from durable ABS plastic, which will never rust or corrode. Tin-Plated copper terminals makes great conductivity.

• 7 Pin to 4 Pin Trailer Adapter. This 7 to 4 trailer connector converts your vehicle’s 7 way rv blade connector to a 4 way flat connector on your trailer, great for running power from your vehicle
• Easy to Use. 7 Way to 4 Way trailer connector adapter is super easy to install, simply plug the rv blade 7 pin connector into the existing 7 pin socket on your truck, and plug the 4 pin connector to your trailer, easy plug and play installation
• 3 in 1 Design. This trailer light tester combines both 5 way circuit tester and 7 way trailer light tester, allows you to test the 4 pin flat,5 pin flat and the 7 blade connectors. Easy and quick to test trailer circuits on most trucks. Upgraded Double-sided design allow you to read the LEDs from both top and bottom sides!
• Acts as a 7 Pin to 5 Pin Trailer Plug Adapter. 7 way rv trailer tester can be also used as a 7 way to 5 way trailer adapter, converts the vehicle-side 7 pin output to a 5 pin flat adapter to connect the 5 way or 4 way trailer light plug.
• Bright LED Indicators. Plug in 5 way and 7 way trailer light tester equips a LED light for each electrical function. Plugging the light tester and check, you can easily read the green LEDs and find out which wiring has a problem.