Need the radio fader control that is next to the gear shift on SLC's and I assume also on SL's. I don't know what other MB cars have this switch. The switch is 3/4 in. wide and 1 5/8 in. long and takes a 6 prong female plug. It has a rolling control wheel in it, and is made by Becker.

What year i have a few of those i think there all the same $8 ill send you one