Test Your Trailer Lights — Without the Tow Vehicle
The Check N Tow Trailer Light Tester lets you simulate real vehicle signals — including brake override and turn flash — for fast, solo, and accurate trailer diagnostics. Built tough, battery-powered, and compatible with the Milwaukee, DeWalt or Snap-On batteries you already own.
Power Your Trailer Like a Pro with the Check N Tow
Engineered for durability, reliability, and total convenience, the Check N Tow is the ultimate trailer light tester for serious haulers. Designed to discreetly connect to the batteries you already own (18V–48V), it’s perfect for RVs, utility trailers, equipment haulers, and more.
Smart, Rugged, Ready When You Are
The Check N Tow isn’t just another tester — it’s your portable trailer command center. With a modular design that runs on the batteries you already own, this box brings true mobility and accuracy to your trailer checks. From job sites to campgrounds, just snap in a battery, plug in your trailer, and instantly test every function — no cords, no second guessing. Whether you're prepping for a haul or doing fleet maintenance, Check N Tow is the way to go!
More Than a Tester — It’s a Power Hub
Equipped with a built-in 12V cigarette-style outlet, the Check N Tow goes beyond trailer testing. This universal port gives you the flexibility to power tire inflators, LED work lights, inverters, phone chargers, and more — right from your test box. With the right adapter, it can even be used to jump-start a vehicle in a pinch. Whether you’re in the driveway, at the job site, or out on the trail, you’ll always have portable power wherever you go!
