Heating hydraulic interface for a system for supplying and/or dispensing windscreen-washer liquid of an automobile

The invention relates to a hydraulic interface (7) intended to be installed between a supply tube (6) for windshield washer liquid and a connector (4) of a wiping device of a window of a motor vehicle, comprising a body (9) defining at least one channel (8) for the passage of windshield washer liquid, and at least one electric heating conductor (13) arranged to heat said windshield washer liquid, said body (9) being configured to secure said conductor (13) to itself by assembly of different parts of said body and/or by assembly to shapes formed from material of said body.