Car spark tester - Easy installation: connects in seconds between the spark plug and the plug wire, enabling quick setup and testing. - Visual ignition check: when the ignition fires, the tester reflects the spark with a visible light signal, assisting ignition and coil diagnostics. - Simple operation: plug directly into the circuit with no tools required, making on-vehicle testing straightforward. - Compatibility: designed for standard automotive ignition systems that use spark plugs and plug wires; suitable for common car models and configurations. - Performance indication: provides a clear, real-time indication of spark presence to help identify ignition issues quickly. - Practical use scenarios: - Quick no-spark or misfire diagnostics during routine maintenance. - Test ignition coil operation by observing spark activity when the engine is cranked. - Verify spark delivery after replacing spark plugs, ignition coils, or plug wires to ensure proper ignition function. - Design and handling: compact form factor for easy handling and storage; simple, reliable tool for everyday diagnostic use.