General Description

The wiper system consists of a permanent magnet, positive park wiper motor which is mounted on the engine side of the cowl. The motor drives a crank arm which is attached to a transmission and link assembly mounted in front of the windshield in the fresh air plenum. The transmission transfers rotary motion from the motor into reciprocating motion at the wiper drive shaft.

There are two different systems available on this truck. The base system uses a windshield wiper motor that has a high, low, and mist mode. The optional motor includes a pulse mode as well as the modes available with the base motor.

The components of this system are:
1. The multi-function switch.
2. The wiring harness from the multi-function switch to the wiper motor.
3. The wiper motor.

The difference between the base and the pulse systems is, the pulse system uses an integrated circuit board to control the pulse function, and the multi-function switch has a variable resistor (rheostat) in the switch to control the rate of pulse to the wiper motor circuit board.