Car Circuit Tester,Portable LED Auto Ignition Test Pen Spark Plug Wire Coil Diagnostic Tester Detector Tool - Product Features
- 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.