Car Circuit Tester,Portable LED Auto Ignition Test Pen Spark Plug Wire Coil Diagnostic Tester Detector Tool Battery Testers



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►High quality insulated handle, Safe and reliable. Used to test spark plugs, coils and breaker.
►The end with grooves makes the contact area of the wire and instrument larger and the test results more accurate.
►High-brightness bulbs and transparent observation windows make test results easier to observe.
►It is more convenient to carry and use without any cables. It is an essential tool for automotive inspection and maintenance.
►How to use: When the engine starts or runs, the end of the test pen is placed on the high voltage line, and the luminous tube will flash indicating the ignition performance.