Dupont Crimp Tool Tutorial




This Instructable describes how to crimp Dupont connectors on a wire without soldering.

A custom cable with 2 single male pins to 2 grouped female pins will be created step by step. (See the picture) This cable is not available in any store, so let's DIY with the right tools and components.

Dupont is also called Jumper Wire cables. They are low cost and used to connect hardware such as sensors, Arduino boards and breadboards together. The connectors are available in male and female with a 2.54mm (100mill) pitch.

Advantages of creating your own custom cables:

  • Cheap.
  • Solid connection.
  • Custom cable length.
  • Custom cable color.
  • Easy to connect / disconnect hardware.
  • Any combination of male / female connectors.
  • Group male / female pins in one single connector with 1 to 8 pins.


  • Connect sensors to your Arduino board.
  • Connect a breadboard to your Arduino board.
  • Connect other hardware PCB's together.
  • Wire hardware in a final product.
  • Others.

Let's start and have fun!

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Step 1: Shopping List

Dupont housings are available in single pin or multiple pins (groups of 1 to 8 pins). Ready-made cables are also available, but it's cheaper to create your own cables.

The following components are needed for this custom male-female cable:

  • 2x Dupont male.
  • 2x Dupont female.
  • 2x Single pin Dupont housing.
  • 1x Dual pin Dupont housing.
  • Two colored wires.
  • Dupont crimp tool.

Dupont kit:

This Dupont starter kit contains male and female connectors with different housings:

I use this Dupont crimp tool:

You can use:

  • Individual wires such as LiY 18 x 0,1mm, 26 AWG
  • Flat cable, for example:

Note: A Banggood shipment takes about 2 to 6 weeks, but is very cheap.

Tip: It's valuable to buy the connectors in quantities of 100, 200 or even 1000 pins.

Step 2: Tools

Other required tools:

  • Wire cutter.
  • Flat nose pliers.

Let's build the cable!

Step 3: Cut Wires

The first step is to cut wires with the same length.

Tip: Choose your favorite wire colors, such as:

  • Black for ground.
  • Red for power.
  • Blue for negative power.
  • Other colors for data.

Step 4: Strip the Wires

Strip the wires on both sides with 4mm copper.

Step 5: Cut Male or Female Header

Use a nipper to cut a male or female header from the strip.

Keep the attachment at the end of the Dupont connector. The attachment will be used to position the connector in the crimp tool.

Step 6: Place the Wire in the Dupont Connector

Place the stripped wire in the male or female Dupont connector.

The position is important: Click on the picture for additional comments.

Step 7: Fold the Pull Relief

Use a flat pliers to fold the pull relief. This is needed to keep the wire in the right position by placing the male/female connector with wire in the crimb tool. (Next step)

Note: You should not solder the wire.

Step 8: Shrink the Dupont Connector

1. Place the Dupont connector into the crimp tool with the copper side downwards.

2. Put the connector as far as possible until the attachment reaches the crimp tool.

3. Crimp the connector on the wire.

4. Remove the cable from the tool.

Note: Click on the pictures for additional comments.

Step 9: Remove Attachment

Use a plier to remove the attachment at the back of the connector.

Step 10: Mount the Connector Housing

Mount the connector housing with the copper wires up and connector hole on top.

Step 11: Completed!

Congratulations! Now you can create your own low cost cables dedicated for your hardware by using the right tools and components.

Feel free to leave a comment with feedback or your success story. :-)

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14 Discussions


6 weeks ago

This is totally wrong. The DuPont system is designed to crimp through the insulation to make contact with the wire. This maintains the strength of the joint by using the insulation.
The connector is just twisted of the reel and placed into the crimp tool at the correct depth, which is halfway and is held there by a groove in the tool which catches the end two pointed wings so these should not be bent over the cable. The tool is now closed just enough to hold the connector in place.The unstripped cable is now inserted into the connector until it is just visible on the otherside and then crimped. With practice it should take about 15 seconds

1 reply

Reply 19 days ago

Pretty sure that the crimp shown in the picture is a wrap-around not an insulation displacement system. I think this is just what happens when a name gets used for a generic class of connector.


3 years ago


I skip Step 7 and let the crimper do the folding of the pull relief

2 replies

Reply 6 weeks ago

That is what it should be. There primary function is to locate and hold the connector in the correct position in the tool. See my post. It should only take 15 seconds or so to make a DuPont connection


Reply 3 years ago

Thanks for your feedback.

The position of the wire (coper and plastic isolation) in the connector is critical. I had many damaged connectors when the wire moves a few millimeters when placing the wire with connector in the crimp tool. For this reason, I invented step 7 to fold the pull relief first. This keeps the wire in position which is a huge improvement for me.

I leave it up to the reader to test step 7 and post feedback. Maybe it is not needed with every tool.


4 months ago

I have to say I am impressed by these instructions. They are so detailed and precise that my first crimp was perfect. Reading it I found keeping the attachment and using pliers to fold the pull relief weird but both methods helped a lot.
So much better than other crimping instructions! Thanks a lot!

1 reply

Reply 6 weeks ago

The pointed wings acting as a pull relief is secondary to their use. See my post. A DuPont connector should only take about 15 seconds to make.


1 year ago

The crimps are poor quality because the strands were twisted. The strands need to be straight so that the wings can separate the strands into 2 bundles and separately clench them as the die curls the wings inward.

1 reply

Reply 6 weeks ago

Wrong, see my post, crimping into the wire WEAKENS the joint.


6 months ago on Step 11

I just bought a crimper, connectors, and ribbon wire to make a cable for a header. Your instructable was just what I was looking for--well written, logical arrangement, and great illustrations.

Two small recommendations: 1) coper is spelled copper. Coper is a dishonest horse trader. That is funny. I would be "funnier" if I tried to write in Dutch. 2) Change "See the comments in the pictures." to "Click pictures for additional comments." That is what I had to do on my browser.

Thanks again for a very helpful instructable. I have bookmarked it.

1 reply

Reply 6 months ago

Thanks for your feedback!
1. I've replaced all "coper" with "copper." I was not aware of this, but consequent on multiple places. :-)
2. I've also changed "See the comments in the pictures." to "Click on the pictures for additional comments.".
Good to hear that this instructable was helpful for you.


1 year ago


Many thanks for the guide, simple and easy to follow. Can now crimp consistently.


2 years ago

Nice instructable and great tips! Where can I get a set of pliers like the red one in the photo. They look perfect for stripping small gauge wire.

1 reply