Review on 🔌 Enhanced Performance Trailer Light Inline Circuit Tester by Attwood 14133-6 by Dennis Goozmer

Very handy tester! I use it with a pre-built extension to place the tester where I can see it while working with the lighting controls. I later learned how to test trailer headlights by turning on the running lights and four-way turn signals. 4 ways to activate (and test) brake lights and turn signals. Note that a dim LED tester may tell you that there is low voltage from your vehicle's converter box. I ran into this problem and thought it was the trailer lights - since all of the tester's LEDs lit up and I didn't notice that one of them was a little dim. The problem was a bad converter and the tester tried to tell me that. The tester was smarter than me!