I posted some pix on one of the diesel threads, as someone there had the same problem also... I'll see if I can find the thread.

Here it is:
http://www.peachparts.com/shopforum/diesel-discussion/188981-mono-valve-voltages-post1524566.html#post1524566

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Richard Wooldridge
'01 ML320
'82 300D 4.3L V6/T700R4 conversion
'82 380SL, '86 560SL engine/trans. installed
'79 450SL, digital servo update
'75 280C