DC 12V Ignition Test Instrument Spark Plug Ignition Detector Auto Diagnostic Test Tool

1. Quick and easy test helps check the condition of the ignition system it is safe and easy to operate. 2. Light and small size very convenient to carry. 3. Using high quality material it can withstand high voltage and current test spark plug type of metal head convenient docking durable. Test method: 1. Extinguish the engine then disassemble the spark plug coil. 2. Connected the black connector of tester to the spark plug. 3. Connected the metal end of tester to the spark plug coil. 4. Try to start the engine. 5. If the ignition circuit is complete bulb will flash.