Draper 13 and 7 Pin Towbar Socket Tester

This diagnostic tool tests trailer lighting connections on vehicles with 13-pin or 7-pin towbar sockets. It works with both 12V and 24V halogen bulb systems, making it suitable for most commercial vehicles and light goods vehicles. The tester comes with an adaptor to cover both socket types and includes a 5-metre cable, allowing one person to check connections without assistance. An LED display shows whether circuits are functioning correctly. The self-test feature lets you verify the unit works before use. It’s useful for pre-MOT checks, fleet maintenance and roadside diagnostics. The compact size makes it portable for mobile tool kits.