Electrical connector and method of manufacturing

A method of manufacturing an electrical connector comprising:

• manufacturing a sealing joint having an insertion face and an extraction face opposite said insertion face, and at least one passageway extending therebetween, said passageway being for receiving an electrical connection member extending therethrough in an assembled condition of the electrical connector, said electrical connection assembly comprising a terminal and a cable connected thereto, said cable comprising a junction portion designed to be accommodated inside said passageway, and having a diameter Dc, manufacturing said passageway to have a symmetric wall of wall diameter Dw about a passageway central axis, and a retention region comprising a first lip protruding from said wall, a second lip protruding from said wall, and an inter-lip gap between said lips, said first lip being closer from the insertion face than said second lip, manufacturing each of said lip to comprise, in a non-assembled state of the electrical connection assembly, an internal face facing towards the internal face of a corresponding lip, an external face opposite said internal face and a top face between said internal and external faces, said top face facing said central axis, and having an internal diameter Di.