- Wide range of automotive diagnostic uses: quickly locate short circuits, verify lighting circuits, and test continuity for accurate electrical troubleshooting in vehicles. - Safer, reliable operation: built in short circuit protection, a 6 to 24 V DC test range, and automatic detection of poor ground connections to prevent damage during diagnostics. - Efficient and flexible testing: long 16 ft test lead lets you reach engine bays, under dashboards, and across harnesses without moving the vehicle. - Easy to use: connect to the vehicle battery, power on, and read positive and negative current indications to confirm circuit flow. - Practical and compatible design: compact handheld unit suitable for most passenger cars and light trucks with 6 to 24 V systems; robust enough for workshop and field use. - Clear performance attributes: simple controls, quick setup, and repeatable tests to reduce diagnostic time and improve repair accuracy. - Use scenarios: 1) Troubleshooting a misbehaving headlight by testing circuit continuity and ground integrity. 2) Tracing a parasitic electrical drain by isolating circuits and monitoring current flow. 3) Verifying wiring and ground quality during aftermarket installations or repair work.