Make sure the jacket goes into
the connector far enough to be crimped or wires will not only look bad, but they will be prone to failure.
Wires un-twisted for more than
1/2 inch make a poor quality connection.
Cat5 wiring should not be run
parallel to electrical wires. Cross electrical wires at 90º.
Deep Surplus has greant prices and service when it comes to keystone jacks, plates or anything else you need for networking. Their 8-port surface mount boxes are a good way to tame all the cat5 in your wiring closet or furnace room.
The table below shows what wires are used for 10/100 networking. If the 568B Color Scheme is used this means the blue or brown pairs can be used for a phone line.