90% is knowing where and what to push or pull to get the release.
Universal kit or tools would be the best choice.
If you know the release trick…… a stick pin, sharpened and bent paper clip will work.
Terminal release and lock picking have a lot in common.
Reassemble no tools are required for most. Just direction and position.
Replacing a connector terminal ……..getting the exact terminal can be challenge as there dozens of choices in configuration, size, shapes.
These are old tools and pictures:


