This auto voltage tester detects live circuits and helps you find electrical faults quickly and safely. Key benefits Fast detection: The intuitive indicator lights up when current is present, so you can quickly locate live wires and electrical faults in a circuit for faster troubleshooting. Wide compatibility: Operates reliably across a 6 V to 24 V range, making it suitable for a variety of automobile applications, including cars and trucks. Safer handling: A heat-resistant, long light tube remains cool during use, reducing the risk of burns while you work on electrical components. Features and performance Function: Identifies presence of voltage/current in automotive circuits to help pinpoint faults and confirm power at connectors, switches, and wiring. Compatibility: Designed for 6–24 V vehicle electrical systems typical in passenger cars and trucks. Design: Long, heat-resistant light tube provides visibility in tight spaces while staying cool to the touch during operation. Usability: Simple, intuitive indication shows when current is detected, enabling efficient diagnostics without complex setup. Practical applications Locate a live wire in a wiring harness before disconnecting a connector or replacing a component. Find the source of an intermittent lighting or accessory failure by testing fuses, switches, and connector points on a vehicle with a 6–24 V electrical system. Perform quick roadside or workshop checks on truck or car circuits to confirm power presence and narrow down fault locations. What it solves Reduces time spent tracing circuits by clearly indicating where voltage is present. Lowers risk of accidental burns or handling heat buildup with a heat-resistant, cool-running light tube. Works across common vehicle voltages so you can use a single tester for multiple automotive tasks.