Trailer Electrical Testing

Trailer electrical issues can be frustrating and time-consuming. Our TEDS lineup makes diagnosing these problems quick and easy, whether you need a simple tool for routine checks or a professional-grade tester for in-depth diagnostics.

Dunarri TEDS is a rugged, waterproof trailer electrical system tester designed for everyday use. It allows you to test all trailer lighting and brake circuits using a rotary switch, with built-in protections against reverse polarity and back-feed. Featuring a 7-way socket with an adapter to 4-pin and 6-pin, it’s an essential tool for any trailer owner.

Dunarri TEDS Pro takes testing to the next level with a digital amp/volt gauge for real-time readings, a 20A load capacity, and an Auto-Test mode for one-person diagnostics. Built for professionals, it features a Hopkins Endurance connector and advanced circuit protection, making it the most powerful trailer tester available.

Both models are built in the USA, feature flexible battery options, and come with a 24-month warranty. Choose the TEDS that fits your needs and keep your trailer in top shape.