Wheel (100) for a vehicle window wiper drive system, said wheel comprising electrical contact means (400), a first and a second electrical contact means (410, 411) of said electrical contact means being in electrical continuity, and the first and the second electrical contact means being for a respective slider (200a, 200b), said wheel being characterized in that the angular extension (α) of said electrical contact means in the plane of the wheel is strictly less than 360° and said electrical contact means being situated on a face of the wheel intended to receive a linkage.