I have a good multi-funtion switch that controls all lights(including fog) and the rear view mirrors(exterior mirrors)--new at MB the price is about $400===I want $100 and will guarantee it is a good switch----includes shipping in USA---mech said i needed it----WRONG!!!!!------i bought it from LKQ for $155 ----it worked ,but , i did not need it!!-----thanks doug 352 634 4685----I live in florida---it was bought for a 2001 C320 (W203)