This guide will cover removing a damaged RJ-45 connector from an Ethernet cable and the steps to replacing it with a new one using the T568B standard. This requires a wire cutter/stripper/crimper tool and an RJ-45 connector.



  1. First lets identify which side of the tool performs which functions.
    • First lets identify which side of the tool performs which functions.

    • One side of the tool is used for stripping wires. You can tell because it has two blades, one on each side, as indicated in the first photo.

    • The other side is used for cutting wires. You can tell because one side is bladed while the other is flat, as seen in the second photo.

    • If you are using a slightly different tool, the use of it will still be very similar to how it is shown in this guide.

  2. Place the wire across the blade of the wire cutter.
    • Place the wire across the blade of the wire cutter.

    • Squeeze the handles of the tool together until the wire is cut.

    • When you are done with this step, the cable will appear as it does in the second photo.

    • Place about a quarter of an inch of the cable into the stripping end of the tool.

    • Squeeze the handles of the tools together until the tool clicks and then release.

    • Pull the stripped wire from the cable with your fingers.

    • Note: If your wire cutter does not have a side specifically for stripping wires, you can simply use the wire cutting part but do not squeeze the handles all the way down, so that it only cuts the outer casing of the cable.

    • When you have successfully completed this step, the cable should appear similar to the second photo of this step.

    • Organize the wires in the proper order.

    • This order is: Orange-white, Orange, Green-white, Blue, Blue-White, Green, Brown-white, Brown.

    • Hold these wires closely together and use the wire cutter to cut the very end of these wires off, to make them all even in length.

    • Hold the wires closely together in the order shown in the previous step and push them into the new RJ-45 connector, with the clip end of the connector facing down.

    • Push the wires to the end of the connector ensuring that all wires enter their respective chambers in the connector.

    • If you inspect the top of the connector you should be able to see the tips of the wires pushed against the end of the connector, as shown in the second photo in this step.

    • Place the RJ-45 into the crimper at the end of the tool. Push it in all the way, it will fit exactly in the tool, you can not push it in too far.

    • Squeeze the handles of the tool together until it clicks and releases.


You have now replaced the RJ-45 connector, you may test the fix by using the cable. If it does not work, you can always follow the steps in this guide to try again.

9 other people completed this guide.

Wesley Bigalke

Member since: 03/30/2016

443 Reputation

1 Guide authored



You may wish to add that pass through connectors may be easier to work with for some as they allow you to use longer exposed wires. By doing so you can place them through individually, in pairs, etc. and then pull them through to clean up the connector and have the outer wrap seated inside the connector.

An additional note would be that some wires, such as the one in the picture linked below of a pass through connector may not have the white/color striping. You will have to go by the color they are twisted to as the reference of which is which (another time excess wires and pass throughs can help with, as you can work one pair at a time). I haven’t looked into the frequency of this, but my guess is that this will be more prevalent with shielded twisted pairs (as each pair is separated from the others by the grounding wrap).

Here’s a link to a shared image on OneDrive. I also circled how the solid green is placed after the white/blue.

Pass through RJ-45 cable with solid white wires (not orange/white, etc.)

Joseph Birish - Reply

These are very helpful tips. I would not have ever thought of attempting this myself until I read your step by step guide. I am totally unaware of it. RJ45 is a great little product for reducing workshop and installation costs. Thanks for sharing..!! Visit:

Robert Davis - Reply

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