- Power windows still do not come in every car, but can be added as an option. Power windows are a convenience for the driver, as he can control all of the windows in the car without having to lean over seats to put the windows up or down. The driver's side has a switch for its own window, plus switches for all of the other windows.
- Power windows are controlled by switches that are found on the doors or on the center console. The switches get their power from the ignition. They will not work if the ignition key is not either on or in the run position. When the switch is moved to the left or right (or top or bottom, depending on the layout of the switches), it grounds the circuit, allowing power to go through to the window regulator, moving the regulator up or down.
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The actual window is riveted to the regulator, which has a motor. The wiring from the switch runs to the motor, starting the motor when activated, which then moves the regulator. The regulator moves the window up or down.
The driver's side also has switches for all of the other windows in the car. The wiring for windows other than the driver's runs to each of the other switches that it controls (or the control box), which allows the driver to control the other windows. - Should the car have windows that go up and down upon starting the car, the power to the windows is routed through a power window controller (basically a mini computer). Instead of the power going to the switches, it goes from the switch to the power window controller, then to the switches.
