Podoy Car Voltage Tester Light Circuit Continuity Fuse for 6-24V DC Long Systems Probe Test Light Circuit Tester for 6-24V DC Systems Long Probe Continuity Tester Used to Detect Power, Ground and find Shorts and Breaks in Wires Handle Brightly Illuminates if Circuit is Good Quickly check automotive headlights, taillights, turn signal circuits, faulty sockets, connections, fuses, broken wires and more This circuit tester will save you time and speed up the job, perfect for automotive use