Switching between trailers with different connectors can be a pain. This TowSmart adapter bridges that gap by converting a standard 4-flat connector into a 7-way blade plug. It’s a quick way to add power for trailers equipped with electric brakes, reverse lights, or auxiliary circuits without rewiring the whole setup.
Instead of splicing wires or running new harnesses, this plug-only design connects directly to your existing 4-flat trailer wiring. Just plug it in and attach the 7-way to your trailer side—no extra tools or electrical know-how required. It’s a simple, clean solution for anyone who wants to tow multiple trailer types.
Whether you’re towing a camper, utility trailer, or boat trailer, this adapter’s universal fit makes it easy to swap between them. The 4-flat to 7-blade layout covers the most common trailer connections so you can hook up and go without worrying about compatibility.
The solid housing and snug plug design help keep the connection secure even on rough roads. That means consistent signal transfer for turn, brake, and running lights—exactly what you need for safe, dependable towing.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, everyone, Steven here with etrailer.com. Let's take a quick look together at this TowSmart trailer connector adapter. It's gonna adapt from four-way flat to a seven-way blade style, round style, however you want to call it. Now, this again is what we call a four-way flat sometimes or a four pole, different names. And this would plug into the backside of your vehicle that already has these functions. And then you're gonna have an additional ground wire.
You're gonna have blue, yellow, and black, and those are gonna give you power to your brakes, maybe auxiliary lighting, and reverse lighting as well. And then of course, you have a seven way that it would go out to, spring-loaded cap. And then of course, you have holes to mount it. There is no bracket and no hardware included. You can purchase that separately.
Some vehicles require long brackets, some require short brackets. That's why they don't include it from the manufacturer. But again, we have all those different options here at etrailer.com. You can call us and let us know what kind of vehicle you have, and we can better help you select the correct bracket if you so choose. Well, that's gonna wrap it up for our look together.
I'm Steven. Thanks for watching.
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