Arrives before Christmas 
Ever struggled to pinpoint lighting problems in your trailer? The Brophy Circuit Tester for 4-Pole Flat Trailer Connector makes diagnostics a breeze. Simply plug it into your 4-way flat trailer wiring harness, and the labeled LED lights will illuminate to signal which functions are working properly. With clear indicators for your tail lights, left turn signal, right turn signal, and brakes, you'll be able to identify issues quickly and efficiently, saving you time and hassle.
When you're installing wiring by yourself, having a reliable tool to validate your work is crucial. This handy gadget lets you immediately test your trailer wiring without needing a second person to help. By confirming a successful hookup, you can enjoy peace of mind before hitting the road. Whether you’re re-routing wiring or tackling a fresh install, this tool is your best companion.
Don’t let trailer wiring issues catch you unprepared. The compact design of this circuit tester means it can easily fit in your glovebox or toolbox, making it readily available whenever and wherever you need it. It’s small yet mighty, ensuring you’re always ready to check your trailer connections at a moment’s notice, whether you’re at home or on the go.
Worried about complex wiring tests? Forget those concerns. This device is designed with user-friendly simplicity in mind. With an easy plug-and-play setup, even those with no electrical expertise can use it to test trailer light functions as shown in the instructional video. It’s as simple as plugging it in and letting the LEDs do the talking.
Sometimes the problem isn't with the trailer—it's your vehicle. Use this circuit tester to pinpoint issues on the vehicle side, ensuring your connectors provide continuous and accurate power. By doing so, you can troubleshoot grounding problems, shorts, or connection issues with confidence, all without needing a full trailer hook-up.
Investing in this circuit tester not only saves you time but also money. At a price point that’s surprisingly low for its utility, you’re getting a powerful tool without breaking the bank. It’s an essential piece of gear that ensures your trailer wiring is in perfect order, proving to be worth every penny for both peace of mind and practicality.
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hey there hollers. Today, we're going to be taking a look at Brophy's LED Circuit Tester. It's available in a 4-pole or 5-pole connection. Before you hit the road with your trailer, we always recommend testing things out to make sure it's working properly. One of the most important things to test out is the lighting so that others know your intentions around you while you're going down the road. Here at etrailer, we recommend testing your light at the source, which is your vehicle.
That's where this Brophy 4-Pole Flat Connector comes in, because when you plug in your trailer and you have a fault on your trailer, you're not going to necessarily know where the fault lies.With our Brophy 4-Pole tester we can eliminate the variable of our trailer and determine whether or not our vehicle side is working. We simply plug it into our 4-pole connection and then we can run through our functions. You'll want to make sure you have your left turn signal, your right turn signal, your tail lights and your brake lights. Now that you know that your vehicle's working properly, if there we're any problems with the lighting on your trailers end, you can isolate it just to your trailer, make those repairs, and then you're ready to hit the road. And that's going to complete our look at Brophy's LED Circuit Tester..
Works well. Simple to use.
Works as advertised
Works great.
Works great. Thank you
This little attachment works great.
Outstanding as usual!! I won’t go anywhere else!!
nice tool to have handy.
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