. . . depends?
Based on your question, "do they tell all?", I checked my CD. Sadly it does not in that area (seats).
There's a few sketches showing major (key) component locations but there's no schematics. This is the PM CD-ROM.
In the ECU area, it's very good as there are schematics and adjustment procedures, etc..
So possibly the MB official CD may be (and should be) better in that and all areas.
Regards . . . . JimF
'94 S500 Cpe
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