In-line Ignition Spark Tester

To Use:
1.With engine off, remove spark plug wire.
2.Attach black connector to spark plug.
3.Insert metal end of tester into spark plug wire.
4.Try to start the engine.
5.If ignition circuit is complete, bulb will flash.

This product is used to check whether the car ignition system is working properly, and the operation is simple and convenient.