Ultra-Tow Light Testers

Trailer Light Testers

Trailer light testers from Northern Tool offer a simple and convenient way to quickly access and troubleshoot the electrical system of a trailer or tow vehicle. With our trailer light testers, you will never have to guess if you have the proper wiring for your trailer or tow vehicle. These trailer light testers make it easy to perform one-person testing of your trailer’s wiring to ensure the brake, turn, tail and back-up lights, as well as the electrical brake auxiliary power are working properly. These trailer light testers will also save you time by powering the electrical circuit, verifying the wiring configuration and locating any electrical faults on your trailer. Northern Tool offers trailer light testers for any need and budget. In this section, you will find a variety of quality light testers to choose from to fit most any trailer configuration, including 4-way flat capable models, as well as 6- and 7-way round capable models. Most of our trailer light testers are portable and easy to operate. These durable testers are also built to handle everyday use and extreme weather conditions. Many of our trailer light tester kits include battery terminal clips, amperage meters and magnets. All units are short-circuit-proof and will not cause any damage to your vehicle or trailer wiring. Trailer light testers are a handy and vital tool for anyone who cares about time and safety. Whether you are towing a boat or utility vehicle for recreation, or pulling a heavy-duty trailer for commercial purposes, you will appreciate our extremely effective and easy-to-use trailer light testers.