210 589 01 63 00 78-pin test cable - WS82.00-P-0008B
WARNING: This page is about a different car, the 2012 Mercedes-Benz C300, 2011 Mercedes-Benz C300, 2010 Mercedes-Benz C300, 2009 Mercedes-Benz C300, and 2008 Mercedes-Benz C300. However, it is still accessible from the selected car via links, so may be relevant.
FG 82/Set B
MODEL 170, 210
Use/specification:
Test cable, 78-pin, for diagnosis of power windows, exterior and interior rear view mirror, sliding roof, windshield wiper and rain sensor in combination with socket box 129 589 00 21 00