Description
13in Trailer Plug Socket Tester Specifications:
Material: Plastic & Brass
Voltage: DC 12V
Contents: 1 x tester (only for testing 13pin without adapter)
Tips: The body plugs can directly into either 13 pin N type plugs or sockets and gives a continuity test on all lighting circuits.
How to use?
Please test the trailer end and the car end separately, don’t need to connect and test at the same time when using.
Trailer (can also be a caravan, bicycle, carrier or other commercial vehicle):
1.Connect the trailer plug to the tester. 2.Press the yellow button on the side of the tester. 3.If the wiring is good, all the LEDs will light up.
Car: 1.Connect the car socket to the tester. 2.Press the yellow button on the side of the tester. 3.If the wiring is good, all the LEDs will light up. 4.Turn on the left turn signal, the tester’s TURN L indicator lights up, if it doesn’t light up, it means the line is incorrectly connected or damaged. Repeat the steps to turn on the right turn signal, fog lamp, etc.
Note: If a LED doesn’t light up, because the corresponding wire is defective. If all the LEDs don’t light up, then the mass wire is damaged or all bulbs are defective.




