1.s Truck Circuit Tester - Purpose and benefits - Designed to test electrical circuits and quickly locate shorts, grounds, and open circuits, helping you diagnose wiring problems without unnecessary disassembly. - Extends troubleshooting capability across common automotive and vehicle electrical systems, reducing downtime and guesswork. - Compatibility - For use on 12V to 24V systems, covering cars, trucks, SUVs, trailers, RVs, and boats. - Key features - 7 inch long stainless steel probe for precise contact in tight spaces and around components. - Red coiled cord stays compact for storage and can stretch to a full 24 feet when you need extra reach. - Practical advantages - Durable stainless steel probe provides reliable probing in electrical diagnostics. - Compact storage with extended reach capability improves workflow in cramped engine bays and electrical compartments. - Use scenarios - Under-hood automotive troubleshooting: Identify a short or intermittent fault in a headlight or accessory circuit without dismantling wiring harnesses. - Trailer or RV wiring inspection: Locate an open circuit or improper ground in distant lighting or power circuits where reach is limited. - Marine or utility vehicle systems: Test and confirm wiring integrity for 12V accessories on boats or other 12-24V systems, ensuring reliable operation before use.