I cannot find a replacement 6 pin fan (4 position: 0ff and low-med-high)control blower level switch ( I am sure it is Switch # 46 Pages 285-286 of the 75-85 Haynes Diesel 123 Book) which is both mechanical (wire) and electrical. It is placed in the middle of control panel's three switches and I know it has a ribbed black plastic with inner metal housing with a decent weight to it. Besides a Mercedes dealer could anyone tell me where I can possibly obtain one? Right now I am jumping the connector to stay warm. This car has no air cond. Thanks.