Eacalyc Trailer Tester 7 Pin, Plug Socket Pin 12V Light Wiring Circuit 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. 🐾【Excellent Construction】: Safe and dependable performance, reasonable and portable design, deft appearance and convenient usage.