The mechanism that moves the window up and down is called the window regulator.
How does a door window regulator work.
As they are highly used and abused parts of a vehicle it is more common for the drivers side regulator to fail first.
In others the window motor can be replaced separately.
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Position the car battery near the door and use the wire to connect the positive and negative terminals of the battery to the window motor.
The regulator also prevents the window from being forced down manually.
Ford cable type window regulator.
A window regulator is a component inside the door of your car which operates the up and down motion associated with electric windows.
Watch the window motor closely to make certain it is operating.
When the circuit is activated the motor drives a worm gear that is attached to an arm holding the glass supporting bracket.
Observe the movement of the cable and the pivot points on the window regulator as the motor spins.
The command to raise or lower a window is made by depressing a switch mounted on the inside of the door and connected by wires to the window motor.
How does a power window regulator work.