This socket tester is designed for use with halogen bulbs in 12 and 24V systems. It efficiently tests 13 and 7-pin sockets fitted to the rear of vehicles using the supplied adaptor. For use with halogen bulbs on 12 and 24V systems Tests 13 and 7-pin sockets using the supplied adaptor 5m cable and self-test facility for ease of use by one-person Easy to read LED display 1 x 13 and 7-Pin Towbar Socket Tester.
eBay