Review on 🚍 Oyviny 4 Way Flat Trailer Circuit Tester - Straight Wiring Socket Tester with LED Indicators for Turn Signal & Tail Lights - Blue Pocket Design by Roberto Evans

The whole point of the trailer circuit tester is to find out if there is a problem with the tractor's trailer lights, and if the tester doesn't light up, it will falsely indicate a fault! I ordered 2 of these devices in January. The first one I used for the first time didn't have a trailer warning light! It was defective but the seller replaced it immediately! Unfortunately I only used the tester 4 or 5 times and now the exchange doesn't work. Left and Right Brake/Direction LEDs are BOTH OFF! I know this because I have a different brand tester with LEDs on the opposite side and found it to be faulty with that tester. Very disappointed with the quality and finish of this product and now it's going in the bin as the 30 day return/replacement window has expired.