Ps, on ebay is a 20 26 part like yours.

MB Steuergerät A2098202026(01) A 209 820 20 26 (01) on eBay (end time 17-Feb-10 20:23:30 GMT)

It looks like it has all the connections.

There is a used 22 26 part there also

MERCEDES-BENZ CLK DOOR CONTROL UNIT*A2098202226 on eBay (end time 31-Jan-10 10:12:28 GMT)

Richard

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Of course i'll take it apart.

www.mercupgrades.com
http://www.comandonline.co.uk