How to confirm spark?

[kilgorekb]

Without putting my life in danger, how do I confirm that my plug is sparking? Pictures or diagrams are encouraged. Cheap tool/tester suggestions are too.

 

[LouDoo]

I use one of these. Cheap, works well, completely safe.

http://www.harborfreight.com/90-inline-ignition-spark-checker-69023.html

Lou

 

[kilgorekb]

Awesomeness. Exactly what I was looking for. Thumbs up!