Replace a wall jack
When your phone quits working or static develops on the line, your phone jack may need to be replaced. We'll show you how to handle the wiring and replace that phone jack. Remove the two screws on the jack faceplate and disconnect the old jack (Photo 1). Hold on to the wire when you remove the jack so it doesn't slide out the back of the box. If the ends of the wires are free of corrosion, you can reuse them, but if not, cut them back (leave enough wire to work with) and strip off 1/2 in. of sheathing. Photo 2 shows you how to reconnect those wires. If the wires from the wall and the jack are the same color combination, simply match them up. If they don't match, see the chart. Before you mount the new jack to the wall, make sure the bare wires don't touch each other.