Connector for retaining a wiper (3) on a windscreen wiper arm, including an internal electrical connection device between, on the one hand, an electrical connector connected to the electrical circuit of the vehicle and, on the other hand, at least one heating element (11) deposited on a reinforcement (20) implanted in said wiper, characterized in that said internal connecting device includes at least one metal part (10) extending perpendicularly to the heating element (11) and exerting pressure against it so as to ensure a permanent contact with said heating element (11).