- EFFICIENT DIAGNOSTIC TOOL: The Automotive Test Light is a must-have for quickly identifying issues within automotive electrical systems. Designed for 6-24V applications, this Electric Circuit Tester enables technicians to efficiently pinpoint electrical faults, conserving time during repairs. - LONG REACH AND FLEXIBILITY: Featuring a 5m/16.4ft cable, this Test Pen offers substantial reach and maneuverability for testing in challenging locations. Its extended length makes it ideal for automotive professionals, ensuring accurate diagnostics in even the tightest spaces. - VERSATILE TESTING CAPABILITY: The Electric Circuit Tester allows for both positive and negative current testing. Easily assess battery current and ground issues with a simple switch, simplifying the process of verifying the integrity of all electrical systems. - SHORT-CIRCUIT AND GROUND DETECTION: This advanced test pen is built to immediately detect short circuits and faulty ground connections. With its integrated short-circuit detection feature, the Automotive Test Light ensures safe operation while confirming that your vehicle's electrical components are functioning properly. APPLICATION SCENARIOS: 1. Use in workshops to quickly diagnose faulty wiring in classic cars or modern vehicles to enhance service efficiency. 2. Empower DIY enthusiasts to troubleshoot electrical issues at home, like lighting or ignition problems, without professional assistance. 3. Ideal for mobile mechanics who require a reliable tool to perform diagnostics on-site, ensuring seamless repairs regardless of the environment.