The wires that connect the two light switches to each other attach to these two screws and it doesnt matter. Do not use backstabs even if the new switch has them.

3 Way Switch Single Pole Double Throw Or Spdt How To
Light switch with 3 screws. Splice the hot wire the feed for the other loads and a short black pigtail together. Connect the two remaining traveler wires to the two brass or light colored screws. 48 out of 5 stars 66. One screw known as the common is a darker color than the others. Legrand pass seymour 510lacc20 wall plate replacement screws light almond. Connect the wire marked common to the black or dark colored screw.
Connect the ground wire to the green screw. The other two screws usually a lighter brass color are known as the traveler terminals. The screws also bore into holes on the electrical box behind them. A 3 way switch has three terminal screws plus a ground screw. How it works is that the hot wire coming in from the electrical panel is connected to the common screw of the first light switch in the circuit. More buying choices 099 3 new offers.
These are called terminal screws. Finally run the last 2 wire cable from the second switchs black screw to the light. Trim and cap the splice. The ground screw is usually green. Get it as soon as thu jun 11. When wiring a 3 way switch first screw the terminal screws of the new switch until they are difficult to turn.
Next remove the screws that hold the old switches in place. The traveler wires aka. Then connect the 2 switches by splitting the 3 wire cable apart and attaching each of the 3 wires to one of the other 3 screws on each switch. Two of the terminals are a light colorbronze or copper coloredand are called travelers. Free shipping on orders over 25 shipped by amazon. Terminate the light feed to one of the two screws on the new switch.
A more positive way to identify a 3 way switch is to look at the body of the switch and count the number of screw terminals. Amazons choice for light switch screws. First run a 2 wire cable from the wall power to the black screw on 1 of the switches. There are three screw terminals on the body of the switch in addition to the green grounding screw. You should see two black wires each connecting to a different screw on the right side of the switch. Theyre in tabs on the top and bottom of each switch.
On the other side of this switch are two brass screws. Step 3 observe the layout of the wires. Connect the pigtail to the other screw on the new switch. The single dark colored screw is known as the common terminal.