Features and Benefits:

• Quick and easy test helps check the condition of the ignition system at each cylinder
• Troubleshoot dirty spark plug connections, defective points, bad cables or connections, and more
• Shows voltage to plug, a stronger voltage will create a brighter light
• 5 in. Spark plug connection, overall length 8-1/2 in.


Easily connects between the spark plug and spark plug wire. With the engine running, the tool flashes a mirror image of ignition spark.