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How To Crimp a Connector onto a Cable

Replacing a 2-Wire Non-Polarized Plug on a Power Cord

Installing crimped connectors on your networking cables is a job you can easily do yourself, whether attaching connectors on coaxial cable or unshielded twisted-pair (UTP) cable (often called Ethernet cable). This project guide will show you how to crimp the connectors on both types. Before you begin your project, be sure to read any wiring instructions that come with your connectors.




• Determine the type of cable and connector you need.  
• Determine the coax cable size. You can find this on the side of the wire.
• Determine the connector type. The most common in-home coax uses crimp-on F connectors.
• Cut the cable to length, leaving a bit of slack.




• Be sure all cables are disconnected from power before replacing any connectors.




• You can save money by doing this simple job yourself.
• To save time, read over the tools and materials list and all instructions before heading to the store.




Step 1: Strip the Cable Coaxial Cable

Strip the cable

1. Use wire cutters to cut and square off the end of the cable.

2. Use wire strippers to remove 1/2 in. of the cable’s cover to expose the bare copper

3. Use your fingers to expose 1/8 in. of braid and foil by pinching and pulling off a
    small piece of the outer jacket.






UTP Cable:

1. Strip the cable 1/2 in. down from the end using cable strippers.

2. Carefully trim off rip cord.


Step 2: Prepare the Wire Coaxial Cable

Prepare the wire

1. Slip the crimp ring over the end of the cable.

2. Use your fingers to bend all of the braid back along the outside of the cable as 
   evenly as possible.









UTP Cable:

1. Untwist each pair of wires down to the sheathing. If you’re working with CAT-6 wire,
    cut the center core down to the cable end.

2. Lay out the wires side by side in this order: white-orange; orange; white-green; 
    blue; white-blue; green; white-brown; brown.

3. Trim all the wires to the same length, 1/2-3/4 in. from the sheath.


Step 3: Attach the Connector Coaxial Cable

Attach the connector

1. Push the end of the cable into the F connector so that the connector tube goes
    between the foil and outer housing of the cable. Push the end until the white
    insulator is flush with the bottom of the connector.

2. Slide the crimp ring over the bottom of the connector.









UTP Cable:

Insert the wires in the order specified in Step Two above into the RJ-45 plug. The cable sheath should extend into the plug by about 1/2 in. and will be held in place by the crimp.


Our full-color diagram (PDF) shows the order the wires should go in the plug.


Step 4: Crimp the Connector Coaxial Cable

Crimp the connector

Crimp the ring tightly around the end of the connector using the appropriate crimping












UTP Cable:

Crimp the terminal with the appropriate crimping tool.



Step 5: Complete Your Project Coaxial Cable

Attach a connector to the other end to complete your project

1. Trim the loose wires.

2. Cut the copper core wire flush with the end of the connector.

3. Pull on the connector to be sure it's firmly attached.

4. Repeat steps one through four to attach a connector on the other end of the





UTP Cable:

1. Make sure the wires are in the right order, extend to the front of the plug and make
    good contact with the metal contacts in the RJ-45 plug.

2. Repeat project steps one through four to attach a connector on the other end of
    the cable.