Spark tester - Easy connection between spark plug and spark plug cable, enabling quick setup and straightforward inspection of the ignition path. Spark plug motor ignition tester - Establishes a connection between the spark plug and spark plug cable in seconds, helping to identify and fix dirty spark plug connections, defective points, and faulty cables or connections. Spark plug cable connection tester - Simply connect the tester between the spark plug and the plug cable. When a spark is sent, the tester reflects the spark and lights up, providing a clear visual indication of sparking performance. Use scenarios - Quick ignition checks on cars, motorcycles, and other spark-ignition engines to verify plug, cable, and connection integrity. - Before final start when installing or replacing spark plugs or plug cables to confirm proper connection and spark delivery. - Troubleshooting misfires or weak ignition to determine if the spark path is the cause.