4 Way Flat Trailer Circuit Tester with LED Indicator for Towing Vehicles

Introducing the RED WOLF 4-Way Flat Trailer Circuit Tester, a convenient and easy-to-use tool for checking the functionality of your towing brake and running lights. This inline circuit tester is designed to be plugged into the bumper connection or in-line between the tow vehicle and trailer. Once connected, simply turn on the lights to be tested and check the LED lights on the tester for quick and accurate results.

With the 4 pin trailer light inline circuit tester, you can easily make quick checks on your trailer or truck wiring. This is especially useful if you encounter wiring issues down the road and need to identify which lights need to be checked, or if all lights are working properly. The tester is specifically designed to test 4-way flat connections for tail lights, brake lights, and turn signals, allowing you to pinpoint any issues with the cable on the car side without the need for an additional spotter.

The LED lights on the tester make it easy to read and interpret the results. The left LED indicates tail/brake lights, the middle LED indicates the left turn signal, and the right LED indicates the right turn signal. This visual aid provides extra convenience and helps ensure that the results are accurate.

By using the trailer circuit tester to turn on signals, apply brakes, and more, you can effectively verify that your trailer light system is functioning properly. This allows you to determine if the issue lies within your vehicle's wiring or the trailer's wiring.

The compact and portable design of the tester makes it very handy to carry around. It can be stored in your glove compartment for easy access, or taken with you when towing a trailer, such as a U-Haul trailer or a truck from brands like Ford, GMC, or Dodge.

In addition to troubleshooting non-working lights, the circuit tester can be used to test your connection without the need to hook up a trailer. It also helps eliminate your vehicle from the equation when your trailer lights aren't working, making it an essential tool for any towing situation.

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