The ground wires that are not run to the switches are also twisted together and capped with a wire nut somehow there must be some additional ground wires in the box than what I saw because there are 2 attached to the switches and 4 more twisted together. Note connections of the ground wire. On a plastic box merely connect all of the ground wires together. It connects to the positive + side of your battery or to a switched power source that only gets power when your ignition is on. To do this job, you would need 17 feet of cable.
Connect the ground wire to the screw attached to the switch box. A: The quick answer here is this. To view it in full size — click on the diagram. If only one switch controls the light, purchase a single-pole dimmer. On most switches there are two ways to connect the wire to the switch. If there is bare wire exposed, unscrew the wire connector, remove the wires, trim the ends of the wires with a wire cutter, and then re-cap the wires.
The switches operate both lights, but the wiring ensures that if one bulb should burn out, the other will still work. Now twist that wire and the black wire from the source together and fasten with a second wire nut. Wiring a Light Switch - End of Circuit The easiest place to wire a light switch is at the end of a circuit. Fixture Between Two Three-Way Switches: Power Through Switch Light is controlled by two three-way switches with the light between the switches and the power first going through a switch, then to the light, and onto the second three-way switch. If you see a bundle of white wires in the back of the wall box, you can leave them in place.
Then, to provide a margin for error, add 20% more. Grounding screws often are furnished with boxes and are green. There should be a total of 5 wires to strip not including the 2 ground wires: 2 white, 2 black, and 1 red. Attach the cover plate, and screw it in place. This cable contains three wires and a ground: red, black, white, and bare. Connect the red wire leading to the second switch to the top brass screw on the right side. It could be there is or once was a three-way switch in play.
Some light fixtures with a chain pull have a ground connection. The white wire from the source is connected to the white wire from the light. . Grounding wires are pigtailed to the light fixture boxes, and to the switch box terminals. Turn the circuit back on and check your work. If the switches malfunction, switch the lower wires on the new switch.
Step 5 - Connect Hot Wire to Light Fixture Now go back and connect the black wire leading to the first switch box to the light fixture. Attach this to the lower brass screw on the right side of the first switch. The red wire does not actually have any wire exposed, nor is it attached to anything. My uncle tried to install one of these switches, but all it does is blink off and on. The new switch should have instructions for different types and ages of wiring systems.
We are taking out a light in our bathroom, and adding a light with a fan. Just install a dashboard switch inline with the control line. Canadian code requires the use of 14 wire for interior application. The wires from the dimmer will typically be black. Screw the switch to the box with the provided screws. End-of-Run Lights Controlled by Two Three-Way Switches These end-of-run lights are controlled by two three-way switches with a two-wire cable power source coming through the first three-way switch. With a three-way dimmer, you can control a light with two switches.
If you haven't any installed yet, 45 to 48 inches from the floor should work about right. If at any time during the process you feel unsure about the steps or worry you might be doing something wrong, you should stop and call an electrician. Most dimmers are designed to fit a standard wall box opening, which makes it easy to replace the switch for any incandescent or halogen light with a dimmer. Add an extra foot for every connection you will make along the line. It is a little more involved than simply at the end or in the middle of a circuit, mainly because there are more wires and connections involved.