A power window motor is usually wired in line to the ignition system so it only operates when you turn on the ignition system. However, if you want your power window motor to operate while the ignition is turned off, connect it directly to the car’s battery. Simply connect one wire to the positive terminal on the motor and the positive terminal on the battery; the negative terminal on the motor is wired to the ground on the car.
Locate the terminals on the power motor. Look for the terminal labeled “+” (or “Pos”); it has a red wire connected to it.
Follow the red wire to the power window motor’s switch. The terminal it’s connected to is labeled “Out” (or something similar). Find the corresponding red wire on the switch labeled “In” (or something similar). Disconnect the red wire connected to the “In” terminal. Use your fingers to pull the small clamp of the terminal.
Wrap a strip of insulating tape around the clamp on the end of the red wire you’ve just disconnected to prevent it from accidentally touching the terminal or another wire. Cut a strip of wire long enough to reach between the power window motor’s switch and the car’s battery using a knife; AWG gauge 16 wire is fine.
Using wire strippers, remove ¼ inch of plastic off one end of the strip of wire and 2 inches off the opposite end. Using a strip of tape, connect the end of the wire from which you removed ¼ inch of plastic to the “In” terminal that the other red wire was connected to.
Feed the wire you’ve attached to the motor’s switch through to the car’s battery. Try to hide the wire as best as possible so it’s out of the way.
Connect the opposite end of the wire that’s attached to the switch to the positive terminal of the battery. The terminal is labeled “Pos” or “+” and a red battery cable is connected to the terminal. Loosen the clamp on the end of the red wire attached to the battery terminal using a wrench so there’s a small gap between the clamp and the terminal.
Slide the wire between the clamp and the terminal. Tighten the clamp using a wrench so it holds the wire in place. Move the power window motor’s switch to test the connection. The window moves down and up.
