CoolSplice Connectors TE Connectivity's CoolSplice Connectors combines reliability with ease of termination. The connectors eliminate the need to pre-strip the insulation and are easily installed with standard pliers. Featuring visual-controlled termination and push connect buttons, CoolSplice offers a more ergonomic wire termination than conventional twist-on-wire connectors/nuts. New Standard connectors are suitable for splicing 22 AWG to 18 AWG solid and stranded wire. The Large Wire connectors can accommodate 18 AWG to 12 AWG sizes.