Really struggling with RJ45 connectors.

[UNG]

Oh... before I forget... don't bother making up patch cables if you need 'em. Just buy them in... it's cheaper, easier and looks better.

Some large patch frames I have worked on you had to make patch cables of the correct length and colour if you didn't want the head of I.T. to descend on you. On one site they had a patch cable trolley with all the different coloured cables and termination kit so you had no excuse

 

[SparkyChick]

Crossover cables are still used today in some peer to peer applications although auto negotiation has somewhat reduced their use these days

Totally, I just haven't made or used one in over a decade.

 

[timhoward]

Totally, I just haven't made or used one in over a decade.

Same. I have ruined a network tester by connecting it to an RJ45 socket which was in turn getting 55v on pins 4 and 5 from a telephone system though!