This adapter is a lighting and cable tester for trailers and towing vehicles. To do this, you simply have to insert the tester into the socket or plug to be tested, press the test button and a clear diagnosis is made via the LED display.
eBay
ZOYI ZT-E2 Power polarity detector Leakage switch socket tester NCV non-contact electrical test
Aliexpress UK
AOHEWEI 13 Pin Trailer Lights Plug and Socket Tester 12V Wiring Circuit Electrics Diagnostic Connector for Towing Car Caravan. 13 Pin Car Accessories Towbar Towing Plug 12V Caravan Socket Plastic Diagnostic Tools Trailer Electrics Light Connector Tester.
eBay
Electric indicator AC 90-1000V Non-Contact Socket Wall AC Power Outlet Voltage Detector Sensor Tester Pen LED light test pencil
Aliexpress UK
This tester is for a trailer/caravan and tow bar socket/plug checker. To do this, you simply have to insert the tester into the socket or plug to be tested, press the test button and a clear diagnosis is made via the LED display.
eBay
Digital Power Meter Wattmeter 3680W Electric Energy Meter LCD Screen Power Metering Socket Intelligent Power Consumption Tester
Aliexpress UK
Automotive13 Pin Towing Trailer Tow Bar Caravan Light Wiring Circuit Tester Plug Socket UK. To do this, you simply have to insert the tester into the socket or plug to be tested, press the test button and a clear diagnosis is made via the LED display.
eBay
YICHENG Watt Meter,Plug-in Socket Power Meter,Overload Protection,Kilowatt Wattage Voltage AMP Tester,Electrical Energy Monitor
Aliexpress UK
To do this, you simply have to insert the tester into the socket or plug to be tested, press the test button and a clear diagnosis is made via the LED display. This adapter is a lighting and cable tester for trailers and towing vehicles.
eBay
MESTEK Advanced RCD Electric Socket Tester Automatic Neutral Live Earth Wire Testing Circuit Polarity Detector Wall
Aliexpress UK
12v 7-13 Pin Car Trailer Towing Lights Wiring Circuit Plug Socket Tester
eBay
Electric indicator 90-1000V Non-Contact Socket Wall AC Power Outlet Voltage Detector Sensor Tester Pen LED light AC 110V-220V
Aliexpress UK
Just plug the tester in the 7/13 pin socket or the 7/13 pin plug of the trailer or caravan and press the yellow button on the side of the tester. i2.1ca69AYS9AYSKR" style="box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; height: 24284.2px; position: absolute; top: 0px; visibility: hidden; width: 1195.33px; z-index: -1;">.
eBay
MASTFUYI FY1881 Socket Tester - Digital Voltage Detector for US/UK/EU Plugs with Ground Wire Polarity Live Neutral Check
Aliexpress UK
【Easy to Use】: The 12V 13 pin trailer light tester is small and convenient, plug and play design. Just plug the wiring tester into your vehicle's connector, press the button and a clear will be showed via the LED lights.
eBay
Digital voltmeter EU USA plug voltage meter socket voltage tester LCD display voltmeter 110V 220V wall panel voltmeter DM55-1
Aliexpress UK