A method for manufacturing an electrical harness comprising a reference member and a secondary member and at least one electric wire, a protective sheath and at least two shrink sleeves comprising a reference shrink sleeve and a secondary shrink sleeve. According to the disclosure, the method comprises at least the following steps: assembling of the electric wire, the protective sheath, the two shrink sleeves, the reference member and the secondary member, the two shrink sleeves being arranged in a non-contracted state; in a reference portion of the electrical harness, reference contraction of the reference shrink sleeve; in a secondary portion of the electrical harness, angular positioning of the secondary member according to a relative angular orientation; holding of the secondary member in position; and secondary contraction of the secondary shrink sleeve.