🔌 Enhanced Online LED Store 7-Way Blade Trailer Wiring Tester with Nickel-Plated Copper Terminals: Continuity Test, Rugged Material, and 7-Pin Trailer Light Wire Circuit Testing Review

This tester allows you to rotate the test head so you can get the readings no matter how you connect it. Makes reading data from the display much easier than a fixed display.

2018 Ford F150 stopped dying and restarted at every stop. When swerving, the trailer was connected to the truck. Did exactly what I bought it for. Simple, plug and play, problem solved.

The tester showed that the headlight/taillight circuit was not working. Connected the trailer to friends, the light worked perfectly. Since I haven't plugged my trailer in yet, I wanted to double check the new plug I installed. New parts are sometimes defective, this one was it. YMMV

After an incident at a dealership where they forgot to attach the brake harness to the hitch, we bought this brake harness tester to make sure everything was working before renting a trailer. It's cheap and does its job well. With this tester I was able to test the brakes and turn signals.

Easy to use and test (with driver assistant). But I wanted to test the trailer brake circuit and the LED is not drawing enough current to get the brake controller to output anything. Need a dummy load for the controller to work.

I was disappointed that there were no instructions included for the indicator lights. I was able to find a tester schematic online, but even that didn't quite match. Must come with instructions and a diagram of the lights as the markings on the tester are almost impossible to see.

Just didn't work. I turned it on, followed all the instructions in the online manual, and not a single light came on. Of course I replaced the fuses and the problem was solved, but the light still wouldn't come on. I then hooked it up to the trailer and the trailer lights worked with no errors. I'm sure it would have been a great product if it worked, but it didn't.