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DIY LED Light Costume

In this DIY tutorial, I show you how to make a DIY LED Light Costume.

Also, learn other useful DIY tips such as:

  • How to power a DIY LED light costume?
  • Where to buy battery operated LED lights for costume?
  • How to solder LED light strips?
  • Where and how to attach LED lights to clothes?

Video Tutorial

There are many things which are difficult to explain with words and images, so be sure to checkout the video tutorial below.

Tools and Materials Used

Downloadable Project Plans
Sewing Tape Measure
LED Waterproof Light Strip
12V DC Rechargeable Battery
Adpapter Plugs
Wood Embroidery Hoop 9 inch
Soldering Iron Kit
Hot Glue Gun
Glue Sticks
Heat Shrink
Black Pants
Black Hoodie


My wife and I have a hard time finding a costume for our son.
However, he loves things that light up.
What kid doesn’t like bright lights?

So, my wife found a DIY LED light costume and showed it to me 3 days before Halloween.
By the time the materials arrived, I had only 3 hours to make this LED light costume.

Measure LED Lights for Costume

First, I measured the amount of LED Lights needed for the project.
Next, I used a string to make the following measurements:

  • Top of foot to top of pants below bellow button (both legs)
  • Bottom of shirt (below belly button) to forehead and add 6″
  • With arm spread out, measure from one wrist to the other wrist

Also, below is a quick diagram you can reference for the rest of this post

DIY LED Light Costume Diagram

Cut LED Lights for Costume

First, I cut the LED light strips according to my measurements in step 1.
Also, be sure to cut the LED light strip in the correct location.  Otherwise, the LED light strip cannot be spliced together.
The LED light strip I used clearly indicated where to make the cut.

DIY LED Light Costume Cut Mark

Soldering LED Lights to Battery

I connected the power supply with a male connector adapter.

How to Solder LED Light Strips

Ultimately, soldering is a skill that people should learn.
Why should you learn to solder?  Because it is a useful skill to use to splice LED light strips, fix electronics, and much more.

What Is Soldering?

Soldering is the process of using a filler (solder) material to join pieces of metal together at a relatively low temperature (around 400 degrees Fahrenheit).
It may look daunting at first glance, but it is really quite simple.
This kit has everything you need to get started with basic soldering at an affordable price.
Finally, keep reading to learn basic soldering tips which should be enough to get your started.

Connect Power Supply

The power supply for the DIY LED light costume is rechargeable and small enough to fit in the pants pocket.
In order for the power supply to easily disconnect from the LED lights and provide enough slack to rest in the pants pocket, I soldered a male plug.
First, I identified the positive lead (red) and the negative lead (black).
Next, I heated my soldering iron and placed it on the connections to get it hot.
Then, I placed a tiny bit of solder on both ends of the each connection point (4 in total) as this makes it easier to make the connection.

DIY LED Light Costume Power Supply

I matched the wires (red to red and black to black), verified the metal was touching, placed the soldering iron and solder on top, and melted them together.
When soldering, the wires (top left of picture above) only need to be protruding from the cable jacket about 1/16″ to 1/32″.
The white connection cover on the power supply was already in place.

Solder LED Light Strips Together

First, I stripped the outer silicone coating to expose the 2 connections on the LED Light Strip.
Next, I slowly removed the top of the LED light strip at an angle in small amounts in order to not damage the LED light strip.

DIY LED Light Costume Strip Coating


Then, I prepared the wires and LED light strip metal connection points by putting a small amount of solder on each.
I soldered the 2 together.

DIY LED Light Costume LED Strip Solder
DIY LED Light Costume LED Light Solder

Bottom Wire Connections

In this step, I soldered the bottom connections to merge the leg LED lights, power supply, and a male plug for the top LED lights.
Also, there are a lot of connections in this step and can be confusing.  

To clarify, I listed them below for reference.

  • Red Right Leg, Red Left Leg, Red Female Plug for Power Supply, Red Male Plug for Top.
  • Black Right Leg, Black Left Leg, Black Female Plug for Power Supply, Black Male Plug for Top.

NOTE:  To join the LED Light strips on each leg to the other wires, I used the wires from a male and a female plug.
I simply cut the plug off and used the wires.

DIY LED Light Costume Negative Bottom
DIY LED Light Costume Positive Bottom

Also, I’m certain there is a ‘cleaner’ method for doing this, but I was in a rush.
Halloween was roughly 2 hours away when I started this project.
I stripped about 1/4″ of the wire jacket.
Next, I twisted the wires together, heated them with my soldering iron, and put solder on them to hold them together.  
I repeated the process for the negative (black) leads.
Then, I used heat shrink wrap to protect the exposed wires.
Also, electrical tape can also be used; however, shrink wrap is more permanent.

Connect Bottom LED Light Strips to Top LED Light Strips

I used 2 wires that were fairly long (roughly 8″) to connect the bottom LED light strips and battery pack to the top.
First, I cut a small incision in the top of the pants near the left pocket for the battery wire.
Next, I cut a small incision on the opposite side.
Then, I ran the wire through the incision, under the shirt, and out an incision I made in the chest area.

LED Light Costume Incision Wire
DIY LED Light Costume Incision Battery

Top LED Light Connections

First, I repeated the same process to connect the top wires as I did on the pants in step 5.
Then, I connected the top and bottom together with the plugs to ensure it worked properly before proceeding.

DIY LED Light Costume Test

DIY LED Light Costume Hood Hoop

First, I used the wood embroidery hoop to keep the hood sturdy.
Next, I wrapped the edge of the hood around the hoop and used hot glue to secure it.

DIY LED Light Costume Hood

Secure LED Light Strips to Costume

I used hot glue to secure the LED light strip to the pants, shirt, and hood hoop.
In order to accomplish this, I simply placed the LED light strips where I wanted them and secured them in place with hot glue.

DIY LED Light Costume Hot Glue

It is important to remember to remove the back adhesive protective paper if the LED light strip has it.
After I finished gluing the LED light strips, I realized the strip was a bit short.  
Roughly 6 inches too short.

DIY LED Light Costume Measurement

This is the reason I recommended in step 1 to add 6″ to your measurements.
I turned off the lights to see how the DIY LED Light Costume looked in the dark.

DIY LED Light Costume Dark Test

DIY LED Light Costume Conclusion

This project was fun to make because it was different and helped me rediscover my soldering skills – or lack thereof.
I especially enjoyed watching my son wear something I made for him with pride.
How do I know he was proud to wear the DIY LED Light Stick Figure Costume?
Because he didn’t complain when Stacey asked him to take pictures as he normally does.  :)

DIY LED Light Costume Display

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Cora T

Friday 23rd of April 2021

First, thanks so much for this post. If I have to solder, this will help me. Kevin, I'm going to use velcro. There are specific ones made for fabric (walmart). That way I can attach the lights after I put on the clothes.


Wednesday 21st of October 2020

Did the glue hold up? I'm making a similar costume for my son and I'm trying to figure out how to attach the LEDs to the shirt and pants. I was thinking hot glue, but I'm worried it won't hold up with him running around.

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