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Black rectangular 7-pin trailer light tester with six red LED indicators and brass pins

WUSHIXAN 7 Pin Trailer Light Tester with Red LED

SKU CH-8VVJ-QAV46

Tests standard 7-way trailer sockets for tail, brake, reverse, turn and auxiliary circuits using six labelled LEDs

  • Key featuresBattery Powered, false
  • Product typeOhmmeter" or "Voltmeter" or "Ammeter
  • Tests tail, brake, reverse, turn signals and auxiliary power
  • 6 bright labelled LEDs show working and faulty circuits at a glance
  • High-quality ABS plastic and copper shell resists weather, corrosion and impact
  • Brass pins give safe, stable electrical connection every time
  • Plug into 7-way blade outlet, turn on lights and read LEDs instantly

What It Is

The WUSHIXAN 7 Pin Trailer Light Tester is a battery-powered diagnostic tool built from ABS plastic and brass pins. It plugs directly into standard 7-way blade outlets to check tail, brake, reverse, turn-signal and auxiliary circuits. Six labelled red LEDs show instantly which wires carry power and which are open.

Who It Suits

Trailer owners, RV drivers and fleet mechanics who need a quick, plug-and-play way to verify lighting circuits before a journey. It is not for anyone troubleshooting 4-pin flat connectors, 5-pin round plugs or heavy-duty commercial sockets that fall outside the standard 7-way blade layout.

Deciding Specification

The tester fits outlets measuring 5.2 by 2.96 by 1.63 inches (13 by 7.5 by 4.1 cm). If the vehicle or trailer socket matches those dimensions and the 7-way blade pattern, the unit will seat correctly and the LEDs will report every circuit; otherwise it cannot make contact.

How it compares

Measured against everything we stock in Multimeters & Electrical Testers, at today’s prices. Recalculated every night.

Price $18.99
Cheaper than about 83% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameWUSHIXAN
Product typeOhmmeter" or "Voltmeter" or "Ammeter

Questions about this item

How do I confirm the tester is working correctly after plugging it into my 7-way blade outlet?

Each of the six labelled LEDs should light up when the corresponding trailer circuit — tail, brake, reverse, turn signals, brakes and auxiliary power — is activated, giving an immediate visual pass/fail for every pin.

What comes in the box and is anything else required to start testing?

The tester itself, built from ABS plastic with brass pins measuring 5.2 by 2.96 by 1.63 inches, is the only item included; no battery or separate power source is needed because it draws power directly from the vehicle socket.

Which version should I choose if my trailer uses a standard 7-way blade connector?

This single 7-pin model fits every standard 7-way blade outlet (13 by 7.5 by 4.1 cm), so there are no alternative capacities or versions to select from.

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