Slide the tubing over the cable before you connect the wires to the splice block. Then slide the tubing over the connector and shrink it with a heat gun (best) or a torch (gently). The other type ...

The ground should be the last thing you undo. Use one connector per splice (green, black and white). Buy connectors with as many ports (or more) as wires you need to splice together. Cut each wire so ...

The final two sections deal with connectors and splices. As will be seen in that discussion, a splice is a permanent joint between two fibers, whereas connectors are mounted on the ends of fiber ...