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YOUGHENG Circuit Light Tester is designed to ensure your trailer's power supply wiring is functioning perfectly. Featuring six bright LED indicators, it clearly displays any faults in your car or trailer wiring, making troubleshooting a breeze. Lightweight and portable, this tester is easy to operate, giving you the confidence you need on the road. Trust in our Trailer Tester to keep your journeys safe and worry-free!.

Product Parameter (Specification)

Product Feature And Application

【7-pin Plug Socket】The receptacle tester trailer tester for 7-pin plug and socket connection.

【6 Led Indicators】 With 6 LED indicators for easy observation.

【Lightweight and Portable】The line tester Lightweight and portable, easy to operate, worthy of your trust. 。

【Clearly Show】Clearly show any faults in your wiring on your car or trailer.

【Use】The outlet tester used to test whether the trailer power supply wiring is normal

How to test the connection of a Trailer (can also be a caravan or bicycle carrier)

1. Put the tester in the socket of the car.

2. Press the yellow button on the side of the tester.

3. If the wiring is good, all the LEDs light up. Do again steps

4 as previous. You can also test the functions of each pin of the socket.

1. Switch on the left hand indicator (after switching on the ignition key). 2. The corresponding LED must flash with the same frequency. If not, left hand indicator wiring is defective/broken. 3. Repeat steps 1 and 2 for the right hand indicator, rear light, fog light and stoplights. 4. The pin 2 can be used either for a warning fog lamp or a permanent 12V connection. 5. If a LED doesn't light up, it is because the corresponding wire is defective. If all the LEDs don't light up.

Product Details

Item Weight 0.17 Kilograms

Package size :20*5*4cm