ISO HARNESS ADAPTER FITS MERCEDES A-CLASS - 2004 W169/W176 B-CLASS - 2005 W245/W246 C-CLASS - 2004 - 2014 W203/W204 CLK - 2004 W209 ML - 2005 - 2016 W164/W166 R-CLASS - 2006 W251 SPRINTER - 2006 VITO - 2006 W639 GL - 2006 X164 QUADLOCK/FAKRA Description This adapter is required when replacing your factory fitted radio with an aftermarket radio. It will convert the original vehicle power & speaker wiring connectors to a standard ISO connector. Simply plug one end of the adapter into your cars wiring harness and the other into your new radio. Features & Benefits Plug and play, no cutting of wires required Converts car specific power/speaker connector to a universal ISO connector Please check the connections in the vehicle match the harness you are purchasing