Hydraulic and/or electric connection interface for windscreen-wiper blade

The invention relates to an assembly for producing a windshield wiping system for a vehicle, comprising a terminal piece (12) of a wiper blade holder, said wiper blade holder being intended to move a wiper blade (14), a connection interface (20) and an intermediate piece (30), said assembly being able to occupy a working position in which said interface (20) is free with respect to said terminal piece (12) and a service position in which said interface (20) is retained in an oriented manner with respect to said terminal piece (12) by said intermediate piece (30). The invention also relates to a connection device for a windshield wiping system for a vehicle comprising the assembly above, a connector (40) intended to be fixed to said blade (14) and an adapter (50) for connecting the connector (40) to said wiper blade holder. The invention further relates to a windshield wiping system for a vehicle.