Harness is used when installing an aftermarket stereo,Connects the aftermarket stereo. Harness to the vehicles factory harness,Designed specifically to fit the compatible. Vehicles follow list,Plugs into the factory harness without cutting any wires,Standard,color coded wires provide a consistent and simplified installation. Type: Car power cord adapter new and high quality Fitment: For - W203 2001-2004 For - W209(CLK-Class) 2002-2006 Colour: black Material: ABS Package Contents: 1 * Power cord 1 * Canbus protocol box Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.