1. A control system for an automotive wiper system including a front wiper and a rear wiper, comprising: a front wiper motor for driving a front wiper blade; a rear wiper motor for driving a rear wiper blade; a front wiper control circuit connected to said front wiper motor for producing a front wiper drive signal having a given frequency for driving said front wiper motor at said given frequency; a rear wiper control circuit connected to said rear wiper motor for receiving said front wiper drive signal, and for dividing the frequency of said front wiper drive signal by a given value and generating a rear wiper drive signal for driving said rear wiper motor; a vehicle speed sensor for producing a vehicle speed indicative signal having a value representative of the vehicle speed; and means, responsive to said vehicle speed indicative signal, for deriving said given value based on the vehicle speed indicative signal value.