Front Wiper System

The Interval Wiper/Washer System is powered by the 6A Fuse 2 of the Interior Fuse Panel which is hot with the Ignition Switch in the ACCY and RN positions. The system can be operated in three speeds: Lo-speed, Hi-speed and Interval wipe.

LO/HI Speed Operation

When the Interval Wiper/Washer Switch is put into the Lo-speed position, the Wiper Switch powers the override input of the Interval Governor so that the Electronic Switch and the Governor Relay are pulled closed. Curent will then flow from Fuse 2 through the closed contacts of the Governor Relay to the Lo-speed lead of the Wiper Motor. With the Wiper Switch in Hi-speed, current flows from Fuse 2 directly to the Hi-speed lead of the Wiper Motor.

Interval Wipe Operation

When the Interval Wiper/Washer Switch is put into the INT position, the Wiper Switch powers the interval timer and the electronic switch momentarily closes allowing current to flow to the Lo-speed lead of the Wiper Motor. As the Wiper Motor moves out of the grounded PARK position, it waits for the interval timer to end the delay and energizes the electronic switch again. The length of the delay is dependent on the position of the interval adjust.

Washer Operation

When the Washer Switch is activated, current flows from the Fuse 2 through the closed Washer Switch to the interval override of the Interval Governor and to the Washer Pump Motor allowing washer operation to proceed.

Park Operation

As the Wiper Motor turns, the Wiper Motor Switch moves from the grounded PARK position to the RUN position. The powered RUN position allows the Wiper Motor to run until it reaches PARK. This prevents the wiper from stopping anywhere but the PARK position when the Wiper Switch is turned off.