By simplifying splicing, providing flexibility in tight spaces, and maintaining signal integrity, pigtail connectors are widely used in RF, fiber optic, electrical, and automotive systems where direct connector termination is difficult. A pigtail connector is a short, pre-terminated length of cable with one end connected to a connector and the other end left open or spliced into another assembly. 75 mm2) solid and stranded wire. CoolSplice connectors elegantly combine reliability with ease of termination. Its main function is to conveniently extend the electrical connection.