What are the four wires of the wiper motor?

[McJaxson]

The four wires of the wiper motor are: one is the positive wire controlled by the key, and the remaining three are switch control wires. The negative wire is the outer shell of the motor. As long as the motor is fixed to the car with screws, the negative wire is energized, but it will not rotate without turning on the switch. The wiper, also known as the windshield wiper, is a device used to wipe off raindrops and dust attached to the vehicle's windshield to improve the driver's visibility and increase driving safety. The wiper consists of a motor, reducer, four-bar linkage, wiper arm spindle, wiper blade assembly, etc. On rainy days, when raindrops fall on the window glass, the view ahead is quickly obstructed, and vehicles, pedestrians, and scenery become blurred. At this time, turning on the wiper will make the view ahead clear.