All Data LLC
 

ALL DATA provides info shop manual info on most autos thru the internet for an annual fee. It apparently is connected with Autozone. Is anyone familar with it and if so, can they recommend it.

I subscribed to it for one year.
Have not yet renewed it.
It's pretty good for some jobs/information. ;)

I have an alldatadiy subscription for my 95 S420. I've found detailed steps for everything I expected the subscription to cover. The wiring diagram for this car is cut into pages you can view one at a time. Pretty much useless. But maybe the electrical system of the car is so complex that a flat image can't do it justice.

Sixto
95 S420
87 300SDL

Well, didn't know they were connected to Autozone... but maybe. I know I've used ALLDATA softcopy manuals for longer than Autozone has been around here in Virginia.
I've used an ALLDATA subscription for my 1996 S500 and have been very satisfied. Its not particularly intuitive to find things, but once you get the hang of it, its very good. Most of the procedures and pictures/drawings are straight out of the Mercedes documentation and are so marked.
Its much more complete than any other manual I've seen for the W140... although I'm sure the actual Mercedes WIS site is better.
Of course, ALLDATA is only 25 dollars... and ten dollars off of that per year once you sign up.
Hope this helps.