This is the cable to connect the iPhone phone cradle to the Mercedes iPod kit.
This version is for pre MY2009 A/B/CLC/W211-E/CLS/ML/GL/R or the W204-C, W207-E Coupe & W212 E class ipod kits.
It is not suitable for the W211-E, CLS, SLK and NTG2.5 (MY2009) cars (A/B/CLC/W211-E/CLS/ML/GL/R) (with iPod kit part nr B6 782 45 58 , B6 782 45 59 and B6 782 44 96)
It replace the exising iPod connection lead, thus it is no longer possible to connect an iPod, you must use the iPhone.