Description
Test Trailer Lights, Brakes, and 12V Power, No Truck Needed!
The Light Ranger MUTT® is a portable, water-resistant diagnostic tool that utilizes DeWalt® compatible 20V batteries
to test trailer lights, electric brakes, and 12V circuits without needing a truck. Built for light-duty trailers, it features a
standard 7-way spade (J2863) pin connector, commonly used on RVs, car haulers, and larger trailers.
The Light Ranger MUTT® also includes a 3-way adapter to easily test 4-pin and 5-pin connectors typically found on boat and smaller utility trailers, as well as 6-pin connectors used on horse and work trailers. Whether you’re performing a quick safety inspection or diagnosing a lighting fault, this trailer tester makes testing simple, safe, and accurate. With built-in short circuit protection, rugged construction, and USA-made quality, it’s a must-have for technicians and trailer owners.
Features and Benefits
- Simulates turn signals, brake lights, and 12V power to test trailer lighting and brake systems
- Standard 7-way spade connector (#9101 includes 3-way adapter for 4-pin, 5-pin, and 6-pin trailer plugs)
- Auto resetting breaker, water-resistant, and built in the USA for reliable use in shop or field environments
- Tests trailer-side electric brake function
- Internal DeWalt® 20V compatible battery adapter (bat-
tery not included)
Includes
#9101-D20C: • 3-Way Trailer Adapter (#8000)







































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