Hi

I have Ultegra Shifters and have never attempted to change the shifter cables. A few questions -

I have searched on the net, but I can't find any good pictures of how to install the cables at the shifter end. About the best was on the Shimano site, but even then, I don't find it very clear. Does anyone have any good sites that specifically have pictures of terminating the cables for road bike type shifters

Do I have to replace the cable housings when I replace the cables.

Even if I retain the same cable housings, do I need to retape the bars as part of this process

How do I know when I need to replace the cables

How do I know what type of cable / cable housings I need to get. I have 6700

What tools do I need

Thanks