Oyviny 4 Pin to 7 Pin Trailer Adapter with Mounting Bracket + 7 Way Blade & 4 Pin Trailer Light Circuit Tester with LED Indicators

4-Way flat trailer end plugs into the 4-way flat on your vehicle, 7-Way RV-style connector plugs into the 7-way on your trailer; Additional wire leads for 12V power, electric brake function, and auxiliary or reverse function. 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.

• 4 Way to 7 Way Trailer Adapter. This 4 to 7 pin trailer adapter converts the 4-way flat trailer connector on your vehicle to a 7-way RV-style connector. Additional wire leads for 12V power, electric brake function, and auxiliary or reverse function
• 7 Pin Round Socket. 4 pin trailer adapter provides a 7 way RV socket at the back of your vehicle, 7 way round plug connects tail light, reverse light, turn signals, brakes and auxiliary power
• Durable Construction. 4 pin to 7 pin trailer connector is made from heavy duty plastic, tin-plated brass terminal ensure great conductivity, a sping-loaded dust cover protect the socket from dusts and corrosion
• 2 in 1 Design. This trailer light tester combines both 4 way circuit tester and 7 way trailer light tester, allows you to test both the 4 pin and the 7 blade connectors. Easy and quick to test trailer circuits on most trucks.
• 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