Assembly for the production of a wiping system, comprising a terminal part (2) of a wiper arm designed to move a wiper blade (3) over the surface to be wiped and a hydraulic connector (30) comprising at least one piping element (31, 32) for conveying a liquid to the wiper blade (3), the said terminal part comprising at least one means (8) for supporting the said hydraulic connector ensuring that it is held longitudinally with reference to the wiper arm. It is characterized in that the said supporting means allows a movement of the said hydraulic connector (30) in a direction convergent with the longitudinal direction.
