The 13 Pin Trailer Socket Tester provides a straightforward way to check the electrical circuits of a compatible 13 pin towing socket. Ideal for checking a new installation or helping diagnose electrical faults, the tester monitors the main trailer lighting circuits as well as permanent and switched 12V supplies. An approximately 3.5m cable allows the tester to be positioned where its indicators can be viewed from the driver’s seat, making it easier for one person to operate the vehicle controls and check the corresponding circuits.
Features & Benefits
- 13 pin socket testing - designed for checking compatible 13 pin trailer and towing electrical sockets.
- Lighting circuit checks - tests left and right position lights, left and right indicators, stop, fog and reverse circuits.
- 12V supply testing - checks both permanent 12V+ and switched 12V+ supplies.
- Approx. 3.5m cable - allows the tester to be viewed from the driver’s seat for easier single-person testing.
- Installation checking - useful for confirming electrical operation after fitting or servicing towing electrics.
- Fault diagnosis - helps establish whether individual circuits at the towing socket are operating correctly.
- Applications - suitable for workshops, trailer servicing, towbar installations, fleet maintenance and pre-towing electrical checks.
Circuits Checked
Left position • Right position • Left indicator • Right indicator • Stop • Fog • Reverse • 12V+ permanent supply • 12V+ switched supply
Top Tip
Always check the actual trailer lights as well
A successful socket test confirms the relevant circuits at the towing socket, but it does not confirm that every lamp on the connected trailer or caravan is working. Check all road lights before every journey.
