WUSHIXAN Trailer Light Tester, 7 Pin Trailer Plug Testerwith Red LED, 7 Way Trailer Plug Testerfor Diagnosing and Fixing Trailer Socket Circuit Problems

Additional Details from the Manufacturer

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• 【HIGH QUALITY】Trailer Tester is Made of High-quality ABS Plastic and Copper, with a Black Matte Exterior Shell for Optimal Weather, Corrosion and Impact Resistance for Long-term Use.
• 【MULTI-FUNCTION】7 Pin Trailer Tester can Test Tail Lights, Brake Lights, Reverse Lights, Turn Signals, Brakes and Auxiliary Power.
• 【COMPATIBILITY】Trailer Wiring Tester is Compatible with Standard 7-way Blade Trailer Outlets. 7 Pin Trailer Plug Size: 5.2x2.96x1.63 Inches (13x7.5x4.1CM).
• 【SUPERIOR CONDUCTIVITY】 7 Way Trailer Plug Uses High Quality Brass Pins to Ensure a Safe and Stable Electrical Signal Connection between the Plug and the Trailer. The Trailer Light Adapter Features 6 Bright LED Indicators. Each Indicator is Clearly and Distinctly Labeled, Allowing you to Quickly Identify Working and Faulty Circuits at a Glance.
• 【EASY TO USE】 Plug 7 Prong Trailer Plug into the Trailer or Adapter, Turn on the Lights, and Check the Easy-to-read LEDs, Plug and Play.