The combination switch is a multi-functional combination switch used to control lighting and light signal devices and some other accessories. It is usually a handle type, which is installed on the steering column under the steering wheel to facilitate the driver's operation. Generally, the combination switch is divided into two handles and one button: ① The left handle is the light control switch. Control turn signal lamps, headlamps and other lights. Before turning, pull the handle back and forth according to the turning direction of the steering wheel to turn on the left and right turn signal lights respectively. Clockwise is right turn, counterclockwise is left turn. At this time, the corresponding turn indicator in the combination instrument should also be on. When the steering wheel of a new car returns to the right position after turning, the handle will automatically return and the turn signal lamp will automatically turn off. Some cars have lane change gears. Pull the handle forward (or back) slightly to turn on the turn signal lamp, and then release it to return to the original position automatically. Its end can be twisted around the axis of the handle to control other lights. There are also three gears: OFF neutral, and all lights go out. It should be blocked in the daytime. 1 Nighttime use: all lights are on except for headlights, including instrument lights, front position lights, rear position lights, license plate lights, etc. 2 Headlamps on: low beam lamps are on, and other lamps are also on. In this gear, push down the handle to change the high beam. If the handle is pushed up and down, the overtaking signal will be sent. ② The right handle is the wiper and windshield washer switch. Four gears: OFF neutral, wiper does not work. INT works intermittently (once every 4 to 5s). LO operates at low speed. HI operates at high speed. If the handle is pulled up, the windshield washer fluid can be ejected. Some have detergent button at the end of the handle. ③ Operate the center above the combination switch, and there is a danger alarm flash button. Press down to turn on the danger alarm flash Generally, the right side of the car combination switch is the light. One stroke is the low beam, two strokes is the high beam, and in the original state, it is the instantaneous high beam (super light or warning light). The left side is the wiper. When pulling down one stroke is continuous, when pulling two strokes is intermittent, and when lifting up, the wiper sprays water.