Portable Trailer Light Tester Box – Wireless Remote, Built-In Battery, Full-Function 7-Pin Diagnostic Tool

Test 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-forth.

• Full Lighting System Check: Detects brake, reverse, tail, and turn signal faults with precision. Instantly confirms wiring and connection integrity.

• All-Weather, All-Purpose: Aviation-grade aluminum body resists shocks, corrosion, and extreme temperatures. Perfect for year-round use.

• Built-In 12V Power Supply: Integrated 10Ah lithium battery runs up to 8 hours — no external power source required.

• Universal Compatibility: Works with 7-way round pins and 3/4/5-flat pin connectors — suitable for cars, trucks, campers, RVs, boats, and utility trailers.

• Compact & Reliable: Drop-tested and salt-spray-resistant. Built to last for years of outdoor use.

Key Features

• Wireless Remote Control (100-ft Range): Switch lighting functions on/off or test all lights simultaneously with a click.

• Integrated Tester Plug: Includes 7-way connector to verify if your vehicle interface works correctly.

• Independent Fault Detection: 7-channel diagnostic module instantly identifies abnormal signals or wiring issues.

• Military-Grade Protection: Safety circuitry prevents overcurrent and protects against voltage spikes.

• Quick LED Feedback: Green = Pass, Red = Fault — instant visual confirmation.

• Rechargeable Battery: 12V 10Ah lithium-ion pack with 2000-cycle lifespan; recharge via Type-C port.

• Portable Design: Lightweight, small footprint — easy to carry or store in your trailer toolbox.

Perfect For

• Trailer owners who want fast, independent safety checks before every trip.

• RV, camper, and boat owners maintaining reliable light connections.

• Farmers, transporters, and weekend haulers who regularly switch trailers.

• DIYers looking for a professional-grade tool that’s easy to use anywhere.

How To Use

1. Connect the tester to your trailer’s light plug (7-pin or 3/4/5-flat).

2. Turn on the power switch — LEDs will activate.

3. Use the remote to test each light: brake, reverse, left/right turn, and tail.

4. Watch the LED indicators for instant pass/fail results.

5. Turn off power when done to conserve battery life.

Product Specifications

What’s Included

• 1 × Portable Trailer Light Tester Box (built-in battery)

• 1 × Wireless Remote Controller

• 1 × 7-Pin Trailer Tester Plug

• 1 × Type-C Charging Cable

• 1 × User Manual