I think we're misunderstanding one another. My answer should make that obvious:

Every camera I've ever seen has connectors already on the wire. The wire that comes out of the back of the camera used to split into two wires, with a BNC on one wire and a power connector on the other wire. Newer cameras have a wire with an RJ-45 on it. Some of these cameras also have an additional wire, some of which end in bare pigtails.

What cameras do you use that DON'T have connectors on the wire, that have either blunt-cut wire or stripped ends on pigtails?