The power supply that we are using is manufactured by the company that makes the LED strips we're using and is designed specifically for the strips we are using. As you can see in this picture it is a 12V 18W supply with a 3 wire input. Those three wires are the standard AC power connections you find in most homes at least in the U. Those lines are ground, live or hot , and neutral. It then has a standard 2 wire 12V DC output on the other side.
In this guide I just used your run of the mill single temperature Weller Soldering Iron. Since we're not doing anything real technical, any soldering iron should do. What we need for this set up is a 3 Prong AC power cable that you don't need for something else. I used the standard AC power cable that is commonly used with computers and monitors. We will be cutting the end of the cable off and soldering it to our power adapter, so make sure you won't need this cable for anything else.
Prepping the power cable - In order to use this power cable we need access to the wires. Simply cut off the end of the cable, leaving as much usable cable as possible on the end that plugs into the wall. Expose wires - Using the wire stripper, cut through the outer molding of the wire. You will want to give yourself enough length of wire that it is easy to work with, but not too much as you'll need to be able to cover it back up. Remove casing - Pull on the outer casing of the cable and slide it off the wires inside.
As you do this, be careful not to pull too hard as you could put a short in the cable. Separate wires - The wires will generally be twisted around each other. Simply, untwist the wires and separate them so that you have easy access to them. Identify wires - It's possible that the color coding on the wire you're cutting apart won't match the color coding on the power supply.
It is very important that you know which wire goes to each part of the plug. For this particular cable the white wire is neutral, the balck is live or hot , and green is ground. This is a very common way of color coding the wires, but is not always followed. Strip individual wires - Use the wire stripper to cut a half inch or so of the casing off each wire. Prep Shrink Tubing - You'll need to use the shrink tubing to act as insulator in between each wire and to cover the entire set of wires.
I used half of a small tube on both the live and neutral lines. Then I used a medium one on the cable coming from the power adapter and a large one on the full AC cable. Place Large Tubing - Slide the large tubing over all the wires and a bit down the cable to get it out of the way. Place Small Tubing - Slide the shorter small pieces of tubing over the live and neutral wires. Place Medium Tubing - Just like with the other pieces, slide the medium tubing over the wires and down the cable until it is out of the way.
Soldering - Solder each of the 3 pairs of wires together. Make sure that the solder job is as clean as possible to prevent any extra resistance in the wire. This will help ensure the safety of using that cable. Shrink Small Tubing - Slide the small tubing pieces over the solder joints. Use the lighter to shrink the tubing to the smallest it will go. Make sure that the wires that are covered do not have any exposed wire that could result in a short.
Shrink Medium Tubing - Slide the medium piece of tubing until it covers the exposed wires coming from the power supply cable. This should cover at the very least from the outer casing of that cable to the small shrink tubing we placed before. This medium tubing will be the first layer of insulation around the ground wire, since we did not put a separate piece of small tubing over that.
Again, use the lighter to shrink the tubing as much as possible. Shrink Large Tubing - Slide the large piece of tubing so that it covers both the casing on our AC cable and the medium tubing we just placed. This should finish a full cover across all of the wires we've been working with. As before, make sure none of the wires are exposed and use the lighter to shrink the tubing.
We will need to use our switch and a cable designed to plug into the LED strips. We will want to use a low-voltage SPST switch for this system. This is your basic on-off single switch.
How to Install Your Own LED Light Strips
Then we'll strip the casing off so that it is ready to be soldered. Prep Tubing - We're going to want to use another piece of small tubing to protect our circuit from shorting out. The precise method for disconnecting your device from its power source differs depending on the device you're working on. For cars, you'll want to disconnect the negative terminal of the battery, for instance, while other devices may require you to unplug or manually disconnect the power supply in some other way.
Remove the panel or housing from the device. Installing a toggle switch on a device requires you to gain access to the device's internal wiring, which usually means removing the device's exterior paneling or housing. If possible, rather than removing the paneling for the entire object, try to remove only the paneling from the part of the device where you intend to install the switch.
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For instance, if you're installing a toggle switch in your car, you'll want to remove the dash paneling, if possible—a small portion of paneling where you want to install the switch, rather than the entire dash panel. This may require screwdrivers, pry bars, "panel poppers," or other specialized tools.
How to Install a Toggle Switch: 14 Steps (with Pictures) - wikiHow
Measure the diameter of the switch bushing that will protrude through the panel. To accommodate your toggle switch, you'll usually need to create a suitably-sized and shaped hole in the paneling or housing of your device. Measure the dimensions of your switch bushing the part of the switch in which the "lever" is seated so that you'll know how large to make your hole. For basic toggle switches, this is usually a circular hole, but depending on the type of switch you're using, differently-shaped holes may be necessary.
Drill or cut a hole through the panel to fit your hole. Next, make a hole in the paneling of your device to fit your switch. For the most basic toggle switches with circular bushings, this will mean drilling with a bit slightly larger that the diameter of the switch bushing. Use a HSS high speed steel twist drill bit to drill through wood, plastic or mild steel.
A spade bit may also be used if you are drilling through wood. Install the switch from the underside of the panel. Finally, put your switch in the hole you've just carved for it, passing through from the underside. Secure the toggle switch in place with its mount. This usually means installing the mount over the hole, passing the toggle switch through, and tightening it in place with a nut. For example, in a basic toggle switch setup, you might have to thread a jam nut onto the switch's bushing to fasten it to the panel mount, then tighten the nut with an adjustable wrench. Defer to the instructions provided with your switch or your device.
The types of devices onto which you might want to install a toggle switch will have electrical configurations that vary greatly. Thus, no single guide is likely to provide a one-size-fits-all solution. The steps in this section are meant to be taken as general guidelines for a simple on-off single pole, single throw or SPST toggle switch.
They should never supersede any instructions included with your toggle switch or the device into which you're installing it. When in doubt, consult a skilled electrician to save time and avoid inadvertent damage. Cut the supply wire in your device. For your toggle switch to function as an on-off switch, you'll need to wire your toggle switch to the device's power supply. Use wire cutters to cut your device's supply wire in a location that best allows for routing either or both ends of the wire to the switch.
Add a pigtail if either end of the wire does not reach the switch. It can be connected to wires to that aren't quite long enough to reach your toggle switch as a sort of "extender. Determine the gauge of the existing wire and obtain black wire of the same gauge.
Cut a piece of black wire long enough to reach from the cut end of the supply wire to the toggle switch. Connect one end of the pigtail wire to the supply wire by twisting the ends of the wires together clockwise. Twist a wire nut of the proper size clockwise over the wire joint until the wire nut is tight. Connect the supply wire to the toggle switch. At this point, you've a made a break in the device's supply wire, you'll need to add your toggle switch in the middle of the break so that it can regulate the flow of electricity through the circuit. The way you do this depends on the type of toggle switch you have.
If your toggle switch has wire leads, twist the end of each lead to one of the supply wires or pigtail extensions and twist a wire nut over each wire connection until they're tight. If your toggle switch has screw terminals, loosen the terminal screws, loop the ends of the supply wires and hook each loop over a terminal screw so the loops point clockwise around the shaft of each terminal screw. Then, tighten the terminal screws. If the toggle switch has solder connections, bend the ends of the wires around the switch terminals.
Needle-nose pliers may be useful. Heat each terminal with a soldering iron while holding the end of solder wire in contact with the terminal but not in direct contact with the soldering iron tip. When the solder begins to melt, withdraw the soldering iron tip and allow the melting solder to flow and cover the wire-terminal joint. When your toggle switch is wired properly, carefully re-connect the device's power supply and test the function of the toggle switch.
If it works as intended, you may replace the panel or device housing. You've successfully installed a toggle switch. Select a switch with the appropriate number of "poles" and "throws" for your purpose.
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In electrical terminology, a toggle switch can have one or more "poles" and "throws. A throw refers to the number of positions a switch has. Usually, for simple on-off capability, you'll want a SPST switch. To ensure you select the right toggle switch, check with the manufacturer or ask a salesperson to help you.
Ensure that the switch is compatible with the device you intend to use it for. Read through the instructions or paperwork that come with the switch to make sure it will work for your purposes.