Replace a standard lamp switch with an in line switch
Time A few minutes
ComplexityBeginner
CostLess than $20
Introduction
Got a lamp that's mounted on a high cabinet, and you need to get on a chair or ladder to turn it on and off? An in-line cord switch will make that problem go away. You'll love an in-line switch even if your lamp is accessible but you're just tired of reaching under the lampshade to flip it off.
Installing an in-line cord switch is fast, simple and does't require any special tools. Best of all, the switch is an inexpensive part that's available at any hardware store. Here, we'll show how to do this basic electrical upgrade.Tools Required
- 4-in-1 screwdriver
- Pocketknife
- Wire stripper/cutter
Project step-by-step (5)
Step 1
 Purchase Switch
You can buy an in-line cord switch in more than one size, and you’ll want to match it to the thickness of the lamp cord. Look at the tiny printing on the cord to determine which size switch you need, SPT-1 or SPT-2. In-line cord switches also vary slightly in design, so make sure you consult the instruction sheet before installation.
Step 2
Polarized Plug
Connect an in-line cord switch only to a cord with a polarized plug. A polarized plug has one prong wider than the other so you can only insert it one way into an outlet.
Step 3
Slit the Cord Where You Want the Switch
To prepare the cord for an in-line cord switch, make sure you cut the hot wire only. It’s the one without any indentations or ribbing. Use a small pocketknife or a utility knife to make a 3/4-in. slit at the desired switch location. Do not cut into the individual wire sheathing.
Step 4
Slice the Smooth Wire
Cut apart the smooth (non-identified) wire in the center of the split.
Step 5
Attach the In-Line Cord Switch
Insert the cord into the wire channel on the switch bottom. Press the switch halves together and tighten the switch screw.
Unplug the lamp before you start the repair.
FAQ
Can I use this switch for high-powered appliances?
You can use this switch for any appliance with a polarized plug that operates at 120 volts. High-powered appliances that operate at 240 volts require a beefier type of in-line cord switch that can accommodate two hot wires.
How do I know the switch is installed correctly?
It’s pretty simple: If you install an in-line cord switch incorrectly, it won’t work. The most common mistake is to cut the neutral wire instead of the hot one. If you do this, splice the wire back together using wire connectors, wrap that section of the cord with tape and try the installation again on a different section of the cord.
