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This article was co-written by Ricardo Mitchell. Ricardo Mitchell is general manager of CN Coterie, an EPA-certified construction company based in Manhattan, New York. CN Coterie specializes in home improvement, electrical, plumbing, carpentry, furniture restoration, dismantling of OATH/ECB violators, and dismantling of DOB violators. Ricardo has more than 10 years of experience in the electrical and construction industry, his associates have more than 30 years of experience in the related industry.
This article has been viewed 5,387 times.
The LED string light is designed for the user to easily cut with scissors. Each LED strip has a pair of copper dots. When you cut the center of the dots, all LEDs are still working properly. Here, you can proceed to wire the LED to the power source via a quick connector or solder. If properly connected, all LEDs will glow brightly.
Steps
Cutting LED String Lights
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Measure the length of LED string you need. LED string lights come in the form of long filaments. You can cut each piece of LED wire as needed, as long as the cut is at the specified point, the light will still work normally. Determine the length of LED strip you need before cutting. [1] X Research Source
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Find the cut at the copper dots on the LED wire. Find the pair of copper dots located behind the LED wire. The copper dots are the connection locations of the LED wire segments. You should see a broken line running between two rows of copper dots. Choose the cut closest to the LED strip length you just measured.
- The broken line is the only place where you can safely cut the LED strip. If you cut in any other position, some LEDs will not work.
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Cut the LED string with scissors. Just use scissors to cut the LED string. Hold the string still and cut along the broken line. You need to cut right between two rows of copper dots. Try to cut a straight line to avoid damaging the LEDs.
Connect the LED to the quick connector
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Align the quick connector with the LED strip. You can buy quick connectors with LED strips at hardware stores, this is also the simplest way to complete the circuit. The LEDs will be marked positive (+) and negative (-) on the back of the wire. Align it so that the black wire on the connector aligns with the – and the red wire connects to the + terminal of the LED. [2] X Research Source
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Pull the plastic rod away from the quick connector by about 3 mm (if using a slide quick connector). Hold the connector with one hand, with the other hand find the small plastic bar (usually black) located at the end of the connector and pull it forward to open it. You need to do it gently because the connector is very fragile.
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Peel off about 6mm of the adhesive cover located on the back of the LED strip. Peel off just enough glue to reveal the copper terminals at the ends of the wires. If the LED string lights you’re using don’t have this adhesive, peel off the plastic at the terminals. [3] X Research Sources
- Use a utility knife or a paper cutter to cut into the plastic and strip away to expose the poles. Do not cut too deep because it will damage the LED circuit.
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Slide the LED into the connector. Slide the LED wire directly into the quick connector so that the black wire contacts the + terminal and the red wire connects to the – terminal of the lamp. [4] X Research Sources
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Close the plastic rod on the quick connector. Pull the black bar towards the LED wire to secure the connection. The LED will not fall from the connector when you release your hand. This connection method also limits the impact on the connection.
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Connect the power cord of the quick connector to the wire of the same color on the power supply. You can buy terminals for LED lights at electrical stores. Plug the power cords into the terminal and then tighten the screws clockwise to secure the power cord. Plug the power cords into the other side of the terminal. [5] X Research Sources
- If the LED does not light, you need to check the connections again. It is possible that the LED wire is connected to the wrong polarity, or you have cut the LED wire in the wrong place.
Solder the LED wires
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Scrape the plastic part at the end of the LED black wire. Use a paper cutter or utility knife to cut into the plastic just above the copper dots located at the top of the LED wire. Strip just enough of the plastic to expose the copper dots, then use a razor blade along the LED strip to clean up plastic debris.
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Alloy solder on copper pole. Heat the soldering iron and hold the alloy electrode above the LED. Melt the metal directly into the copper dots, just enough to form small puddles that completely cover the copper surface.
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Cut a small hole in the top of the plastic cap. You can buy plastic caps from electrical – water – home improvement stores. Use a paper cutter or utility knife to cut a hole in the top of the plastic cap. Drill until the hole is wide enough to pass the wire through.
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Cut the power cord to the desired length and thread it through the hole you cut in the plastic cap. You need to use the black and red wires to line up the LED terminals. Measure the distance from the LED to the power source. Then, lengthen about 1.3 cm of string and cut.
- Thread the power cord through the small hole you drilled earlier, not the larger hole available on the plastic cap.
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Strip the power cord with a special tool. Strip about 1.3 cm of insulation from the end of the wire. Insert the wire stripper to the end of the wire and squeeze the handle to cut through the plastic sheath.
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Twist each end of wire and dot solder. Proceed with each wire one by one. Twist the end of the rope to wrap all the frayed strands together. Heat the torch again and melt the solder alloy onto the bare wire. Do the same with the remaining wire.
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Solder the wires to the LEDs. Connect the electrodes of the matching wire and LED as follows: the black wire connects to the – electrode and the red wire connects to the + electrode. Touch the soldering iron to the alloy rod just above the LED to melt the metal and connect the wires. Keep the wires in place until the solder alloy cools and turns solid again.
- After the solder has cooled, try pulling the wires to check for strength.
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Connect the wire to the power source. Plug the other end of the power cord into the power source. You may need to twist the wires and insert the heat shrink tubing or snap-on before testing the circuit.
- You can also repeat these steps to solder the wire to another LED.
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Stick the cap to the end of the LED wire with silicone. Take another plastic cap and fill it halfway with silicone sealant. Then, press the cap onto the other end of the LED strip. You need to push the end of the LED wire all the way in.
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Check the LEDs. Turn on the switch on the power supply. All LEDs will work right away. If the light doesn’t come on, it’s likely that the wires aren’t connected properly. Check if the color of the wire matches the electrode on the LED. At the same time, the wires must also be soldered firmly to the LED.
Advice
- Cut the LEDs only in the locations specified by the manufacturer. Look for broken lines or copper dots.
Warning
- Use caution when using a soldering iron. Avoid placing the torch on a flammable surface and remember to unplug it when you’re done.
Things you need
Cut the LED string
- LED Strings
- Drag
Connect the LED to the quick connector
- Quick connectors
- Utility knife or paper cutter
Solder the LED wires
- Utility knife or paper cutter
- Soldering iron
- Alloy soldering iron
- Plastic head
- Wire stripping pliers
- Silicone Glue
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This article was co-written by Ricardo Mitchell. Ricardo Mitchell is general manager of CN Coterie, an EPA-certified construction company based in Manhattan, New York. CN Coterie specializes in home improvement, electrical, plumbing, carpentry, furniture restoration, dismantling of OATH/ECB violators, and dismantling of DOB violators. Ricardo has more than 10 years of experience in the electrical and construction industry, his associates have more than 30 years of experience in the related industry.
This article has been viewed 5,387 times.
The LED string light is designed for the user to easily cut with scissors. Each LED strip has a pair of copper dots. When you cut the center of the dots, all LEDs are still working properly. Here, you can proceed to wire the LED to the power source via a quick connector or solder. If properly connected, all LEDs will glow brightly.
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