Portable Trailer Light Tester Box – Wireless Remote, Built-In Battery, Full-Function 7-Pin Diagnostic ToolTest Your Trailer Lights in Seconds No Truck, No Hassle Check brake lights, turn signals, and tail lamps instantly without connecting to a towing vehicle. This portable 12V trailer tester with a built in battery and wireless remote saves time, keeps you safe, and eliminates guesswork on the road. Why Choose This Trailer Light Tester? One Person Operation: Wireless remote lets you test all trailer lights solo no need for a helper or constant back and

within reach

Package Includes:

Durable and Flexible: Advanced materials ensure a snug yet robust fit that moves with you

and total safety

TM (Tail/Running) – Steady ON when parking/running lights are on

The removable aluminum collar contacts the surface when the screw reaches depth

and weekend haulers who regularly switch trailers

and DIY projects such as tiles

Application: Water tanks

RT (Right Turn/Stop) – Flashes with right turn

Charging parameters: 5V ==-1A

Two Reference Points: Choose from front or rear reference for flexible measurement