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dawfall Pack-1 Car Ignition Test Pen, High-Voltage Line Coil Spark Plug Detector with Bulb, Universal Car Spark Plug Test Pen, Pen Type Spark Plug Tester Coil Diagnostic Tool for Cars (Multicolored)

With the engine began, put the scratched end of the tool over the trigger plug cord. If the light bulb flashes, the stimulate plug cord is lugging the stimulate plug signal.Function: This examination pen is utilized to spot the functioning problem of the engine trigger plug. This tool can be made use of in both ignition systems and circuit breakers.Application: The trigger plug tester can be made use of for stimulate plug screening, high-voltage line screening, and ignition coil screening, assisting you plainly and with ease comprehend the condition of the ignition coil or high-voltage line.

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