Towing Trailer Tow Bar Caravan Plug Socket Light Wiring Circuit Tester

6 light LED system.


All the LEDs light up when the wiring is good.


Makes the checking of the wiring quick, easy and very simple.


Durable black plastic construction


Portable, easy to store hand held design


Product Size: Approx.19.5 x 5 x 3.5cm/7.9 x 2.4 x 1.6 "


Voltage 12V


With ROHS approved


This 7 Pin Tester is designed to indicate a failure in the wiring on both towing vehicles and trailers/caravans etc.


Just plug the tester in the 7 pin socket or the 7 pin plug of the trailer or caravan and press the yellow button on the side of the tester.




How to use:


Trailer(can also be used for RV):


1. Connect the 7-hole plug of the trailer to the tester


2. Press the yellow button on the tester:


If the LED lights up all, the line is normal. The function of each LED light is as follows:


PIN 1 - Yellow Wire (Left/Hand Direction Indicator)


PIN 2 - Blue Wire ( Rear Fog Lamps)


PIN 3 - White Wire ( Earth Return)


PIN 4 - Green Wire (Right/H Direction Indicator)


PIN 5 - Brown Wire (Right/H Tail & No. Plate Lamp)


PIN 6 - Red Wire (Stop Lamp


PIN 7 - Black Wire (Left/H Tail & No. Plate Lamp)


If the LEDs are not lit, the line connection is incorrect.