Easy to Use: Turn the engine off and remove the spark plug coil. Connect the black plastic leather connector of the spark plug tester to inline spark plug tester. Start the engine. If the light flashes, the ignition wire is intact.
2PCS Spark Plug Tester, Inline Spark Tester, Ignition Coil Tester Tool for En...
2PCS Spark Plug Tester, Inline Ignition Coil Tester Black+White