Put a RJ45 connector on a Cat 5 cable

Why did I have to do this? My house is pre-wired: each room has 1 or more RJ45 (ethernet) port wired directly to a central cabinet, where I put my router. However, the wire at the cabinet end has no connector (I guess the builder gives opportunities for others to make some money) Fortunately, my brother knows this very well and taught me how to do this. We bought our crimper from Home Depot for $20.

The first thing he did was unscrewing the wall plate to figure out how it is wired at the port. In our case, it's 568-B standard. Next, we look up the wiring diagram at Wikipedia All these colored wire are actually inside the jacket of the Cat 5 cable. So we use the crimper to "peel" off the tip of the cable. Un-twist the wires. Straighten and fan them out. Arrange them according to the diagram, pin 1 - 8 (left to right) Then insert those 8 wires into the RJ45 connector "upside down" and make sure each wire gets into its own "slot." Finally, insert the connector into the crimper and press real hard (make sure the wires won't come lose) For a better description with pictures, check out this web page.