ITEM NAME:Auto Car Test tester Ignition Spark Indicator Plugs Wires Coils Diagnostic OOH.The bulb will glint to indicate the spark. Spark Indicator -Tests Spark Plugs, Spark Plug Wires and Coils Without Puncturing the Wire. 1 x Spark plug indicator Pen. With the engine running, place the grooved end of the tool over the spark plug wire.
