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Check the listing for details. Spark Plug Tester High Energy Ignition System Coil Engine Diagnostic Test Tool. Condition: New. Listed at 9.89 USD. 1 Ignition Coil Tester. OBD2 OBD-II 16-pin Connector connection male OBD shell plug+shell+SR+screw b. Avoid fire, the ignition coil burned out and so on. Can intuitively convenient to understand the operation of the ignition coil.