Thread: Help connecting Ethernet cable to rj45 plug

I ran a bunch of ethernet cables through my walls going to each room and now all i need to do is put the rj45 plug. THe problem is i dont know what wires go where. Ive been looking online and some sites say i go lite to dark, and others say differently. Can any of you help me?

RJ - 45 wiring standard

Do you meant wall jacks or do you just want to put some connectors on the ends of the cables?

If you want wall jacks then most jacks you buy will be color coded and will usually follow the 568B standard.

Well i meant both, but i connected it the A way instead of B and it worked.

Probably not this problem but in a bundle of cat 5 cables to find the one you want, short two color pairs and go to the other end, and test those pairs for short. Label it, go to the next cable

Since AT&T did the wiring at work, they did all the in-premise wiring as T568-A. Every Ethernet cable I've ever seen (except for DEC's BN24-series) have been T568-B.

Just a comment on the CAT-5 crossover cable shown on the link: That crossover will work for 10Base-T and 100Base-TX, but if you have 1000Base-TX (gigabit), it won't work since all four pairs need to be crossed over. If you're making you own crossover cables, you might as well make it to the gigabit specs since it will work on all three standards.