Jiawu Inline Spark Plug Tester, Plug Engine Ignition Tester Straight Boot Ignition Tester Light, Universal Pick Up Coil Armature Diagnostic Detector Tool for Automotive Car Engine

Universal Diagnostic Detector: This spark plug tester is designed to diagnostic the fault of any engine with a spark plug.
High Accuracy: Inline spark tester can diagnose ignition/engine outboard motor issues or a fault in the fuel delivery system quickly and easily.
Easy Operation: You just need to connect the metal end of the tester to the spark plug coil and start the engine. If the ignition wire is intact, the indicator will light.
High Reliability: Ignition coil test tool saves time, frustration and money while also offering a safe secure way to identify spark.
Long Durability: Made by premium quality ABS and metal materials, durable for a long time use. A must have tool for any individual, professional mechanic garage and auto shop.