Pack-1 Automotive Test Light Digital LED Circuit Tester, DC 3V/6V/12V/24V
[Car Truck Circuit Test Pen]: Circuit tester for 3-24V DC system, detect power, ground and find short and broken wires. 3-24V DC Digital Light Tester is used to check various vehicle circuits, such as car headlights, taillights, faulty sockets, fuses, etc.