Delay Operation

When the windshield wiper washer switch is in the delay position voltage is supplied from the windshield wiper washer switch to the interval switch. The interval switch is a variable resistor and supplies the voltage signal to the windshield wiper motor relay which determines the frequency of the wiper cycles. The windshield wiper motor relay controls the wiper motor operation by supplying the motor operating voltage through the windshield wiper motor switch to the low speed supply circuit.