An electrical connection part for electrically connecting first and second devices includes a casing having two arms oriented at 90° with respect to one another. This casing houses a pair of electrical connectors of which a first end is in the shape of a pin housed longitudinally in one of arms, while a second end is in the shape of a sleeve housed longitudinally in the other of the arms. These pins and sleeves may be electrically connected to matching sleeves carried by the first device, respectively to matching pins carried by the second device. The casing is formed by two independent parts including a body and a removable cover. The cover accommodates and/or locks the connectors. The arm which contains the pins is equipped with a shunt element that can connect the pins electrically in the absence of a connection at the sleeves of the first device.