Eacalyc Trailer Tester 7 Pin, Plug Socket Pin 12V Light Wiring Circuit with Adapter for Caravan RV Truck

🐾【Fast Check】: The 7 pin trailer tester is designed to indicate the circuit fault on both towing vehicles and trailers quickly. One end connect to the 7 pin trailer plug and the other end connect to the 7 pin socket of car. 🐾【Extreme Durability】: The trailer plug socket tester 7 pin has passed the CE and RoHS certification. The are selected with suprior ABS plastic and cross slotted copper needles, frosted surface, stable connection. 🐾【Easy to Assemble】: Plug & play design. Just plug the wiring tester into your vehicle's connector, press the button and a clear diagnosis will be showed via the LED lights. And the trailer light tester requires a 9V battery (not included). 🐾【Wide Compatibility】: The 12v 7 pin trailer electric tester is universal European standard, which can widely used to car, caravan, RV, or other vehicles. It also can test 13 pin trailer plug or socket with the adapters. 🐾【Excellent Construction】: Safe and dependable performance, reasonable and portable design, deft appearance and convenient usage.