The invention relates to a connection module 10 for a wiper device 1 of an outer surface 20 of a window 2 of a motor vehicle intended to be arranged between a windscreen wiper 30 and a driving arm 60, the connection module 10 comprising a hydraulic connector 12 and an electrical connector 14, one of the hydraulic 12 and electrical 14 connectors, called first connector, comprising at least one longitudinal electrical or hydraulic routing channel 120, the other of the hydraulic 12 and electrical 14 connectors, called second connector, comprising two longitudinal electrical or hydraulic routing channels 120, the connection module 10 being characterized in that the first connector is at least partially arranged laterally between the two longitudinal routing channels of the second connector.