【4-Way Trailer Tester】This 4 pin trailer plug tester tests taillight, right turn/brake and left turn/brake feeds.Tests 3 usual trailer light functions,a great tool for diagnosing problems with your trailer light fixtures.
【Plug & Play】Simple plug-and-play design, just plug the 4 way trailer plug tester into the connector, turn on the vehicle lights and signals, then check the LED lights on the tester. Each of the indicator light with clear labeling to tell you which of your towing vehicle lights work or not. No extra tools or batteries needed, simple and easy, that's it.
【Bright LED Indicators】 This 4 way trailer circuit tester features a LED light for each electrical functions, turn on the lights and check, you can easily read the LEDs and find out which wiring has a problem
【Portable Design】Small size trailer plug tester is convenient for storage, allows you store in your tool box, glove compartment or anywhere to be ready when you need it. Take this trailer lights tester to be your assistant when needed wherever you go
【Wide Application 】Suitable for almost all types of vehicles including trucks, boats, trailers, campers, caravans, food trucks, and other towing vehicles, etc. 1 Year Warranty by CXTM.