Product Description: 7-Pin Trailer/Caravan Wiring Tester
This 7-Pin Tester is designed to quickly and easily indicate wiring failures on both towing vehicles and trailers/caravans.
Key Features:
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6-LED Indicator System: All LEDs light up when the wiring is correct, making checks quick, easy, and simple.
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Comprehensive Testing: Verifies the function of all pins in a 7-pin socket/plug.
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Durable & Portable: Features a durable black plastic construction with a handy, easy-to-store design.
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Simple Operation: Just plug it in and press the button to test.
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ROHS Approved: Compliant with safety standards.
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Voltage: 12V
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Product Size: Approx. 19.5 x 5 x 3.5 cm / 7.9 x 2.4 x 1.6 inches
How to Use:
For Testing a Trailer/Caravan:
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Connect the trailer's 7-pin plug to the tester.
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Press the yellow button on the tester.
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If all LEDs light up, the wiring is normal.
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If any LEDs do not light, the line connection is incorrect.
For Testing a Car's Socket:
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Connect the tester to the car's 7-pin socket.
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Press the yellow button on the tester.
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Test each function individually (make sure the yellow button is pressed):
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Turn on the left turn signal – the Yellow LED (PIN 1) should light.
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Turn on the right turn signal – the Green LED (PIN 4) should light.
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Repeat for other functions (fog light, stop lamp, tail lights, etc.).
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If the corresponding LED does not light, the line connection is wrong or broken.
LED Pinout Guide (When all LEDs are on):
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PIN 1 - Yellow LED: Left/Hand Direction Indicator
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PIN 2 - Blue LED: Rear Fog Lamps
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PIN 3 - White Wire: Earth Return (Ground)
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PIN 4 - Green LED: Right/H Direction Indicator
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PIN 5 - Brown LED: Right/H Tail & Number Plate Lamp
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PIN 6 - Red LED: Stop Lamp
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PIN 7 - Black LED: Left/H Tail & Number Plate Lamp
Troubleshooting Guide (ensure the yellow button is pressed):
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Some LEDs are not lit: The corresponding wire is damaged, the bulb is broken, or there is a bad connection.
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All LEDs are not lit: The ground wire (PIN 3) is damaged, there is no power, or all bulbs are broken.
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One or more lights are weak or flashing: The corresponding wire is damaged or the plug has a bad connection/foreign objects.
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All LED lights are weak or flashing: The ground wire (PIN 3) is damaged. Please check the power supply.
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Trailer light doesn't work, but tester LED is on: The trailer wiring is short-circuited, which may have blown a fuse.
Package Includes:
Notes:
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Please contact us if you have any questions.
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Please allow minor measurement deviations due to manual sizing.
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Product colors may vary slightly from images due to monitor differences. Thank you for your understanding.
