Feature: 4-way trailer tester has an LED light for each electrical function, making it easy to read the LED light and identify which line is faulty. The small trailer plug tester is easy to store and carry,easy to use
Function:Suitable for 4-pin small trailer light testers and circuit fault solvers, this tester can quickly and accurately detect whether there is a problem with the trailer plug, saving maintenance time and costs, avoiding safety issues or electrical equipment damage caused by plug failures
Material:Trailer wiring circuit tester made of high-quality ABS material and copper, durable, not easy to rust, strong conductivity, and can be used for a long time.Rubber cover,dust-proof, waterproof,prevent dirt ,protect the terminals
Wide Application:Widely used in most of vehicles, including trucks, boats, trailers, RVS and other towing vehicles
How to Use:Plug and play design, insert the 4-way trailer plug tester into the connector and operate the vehicle's turn signals and brakes. When the green light is on, it means there is power
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