Trailer 7 Pin Large Round Plug LED Circuit Tester

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7 Pin Large Round Trailer Plug - LED

The KT LED Trailer Plug provides an accurate visual check via 6 illuminated LED’s to ensure there is power supplied through each correct circuit and that power from the source is active through the trailer plug. The KT LED Trailer Plugs also come standard with an off/on switch to ensure that the LED’s only illuminate when turned on for testing.

Incorporating a revolutionary 3 step wiring body which makes installation as simple as a standard 7 pin round plug. The LED wiring from the circuit board to the LED's has wire connections that are standard industry colours for easy installation.


  • Inbuilt LED circuit tester
  • Simple colour coded wiring
  • Revolutionary 3 step wiring body
  • On/off switch incorporated to prevent distractions to other motorists
  • Fits all standard trailer plugs

The KT LED Trailer Plug will test the electric circuit from the source of power to the trailer plug and will also assist in the detection of crossed wired connection.

The KT LED Trailer Plug will not detect broken or damaged cable from the plug to the application. Nor will it detect faulty globes or LED lights.


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