Can anyone tell me if it is possible to change the front-express-down only configuration on the power windows of a W124 1995 E320T to the more convinient all (front and back) express down & up window configuration, like the one used by all W140s sedans (S-class). Would this involve heavy and expensive reprogramming/rewiring or is it just a matter of changing switches in the main console? Thank you.

A. Rosich
1998 S320
1995 E320T