"Here is a pic of the diagnostic scan tool.

You can see in the pic that the LED light needs to be mounted on something. An empty 35 MM film container works fine.

Arthur Dalton deserves credit for the pic, too:

suginami has attached this image:"


Not sure if the picture will copy....
Could some one tell me how this tool is used on a 93 300E?

Also, does any one have a list of codes for this same year and model?