Abstract: A junction system serves for establishing an electrically conductive connection between a wiring system arranged at a first outer structure and a wiring system arranged at a second inner structure. The respective end regions of the wiring system which have to be interconnected constitute annular receptacles arranged coaxially in tandem, into which a prismatic connector element can be inserted from the outside which comprises on its outer side appropriately designed contact units extending in its longitudinal direction. The quantity of the contact units amounts to a whole or integral multiple of the quantity of the contact pairs to be connected, and these contact units are arranged at the junction element to be offset with respect to each other by a fixed rotational angle.