For your viewing pleasure.....

 

I just watched this and was gona post it up! Been watching him for a long time.

 

Thanks for the vid.
Is this applicable to the 93?

 

It should be close, if not the same. Wire colors might be different.

Danner's video is an example of how a tech worth his/her salt should approach this problem.

As Injuneer pointed out on CZ28, it might be best for those without scopes and amp clamps to start with Shoebox's guides. Then break out the scopes and such to dig deeper if necessary.

http://shbox.com/1/4th_gen_tech2.html#opti_test

Another one I always recommend is the Buick Know How vid on the Opti Spark system.