Oyviny 3-in-1 Trailer Plug Tester 4/5 Pin Flat & 7 Pin Trailer Light Tester with Double-Sided LED Indicators, 5 Way & 7 Way RV Trailer Connector Tester, Not Suitable for Vehicle with Lamp Out Sensor
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.
6 Light Functions. Versatile trailer wiring tester can be used to test 6 separate trailer light functions, quickly confirm the functionality of taillights, brake lights, reverse lights, turn signals, electric trailer brakes and 12V auxiliary power on your vehicle.
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.
Durable Construction. 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.
Simple to Use. No batteries or wiring needed! 7 Blade & 5 Pin Tester is easy to use, ergonomic design is convenient for plugging in or unplugging. Widely used to test trailer light circuits on most Trucks, Boats, Trailers Campers, Caravans, Food Vans and other Towed Vehicles.