The FOURTH picture is of a connector with the "bail" wire removed. This wire holds / locks the connector on to the injector. These are a royal pain in the butt (PITA) to remove. I use the mini screwdriver to do that. When you are trying to remove the bail wire be easy with the connector they crack if to much pressure is applied (to much is not very much for them). Be sure to keep an eye on the bail wire, it will escape if given a chance.
The FIFTH picture is of the rubber "boot" on the back of the connector. The boot will have to be split to remove any wires from a damaged connector. The reason for splitting them instead of just pulling them back is that they have become very stiff and brittle. You want to protect the wire contacts as much as possible. Reinstalling the boot after removing it is very important. Trying to just pull them off will result in damage to the boot and the connector. Carefully cutting one side of the boot is the best way I have found to make them "re-installable".
The SIXTH picture is of a boot that has been split to allow the removal of the wires. The connector is removed.
