Ball-and-socket joint for vehicle headlamp

The articulation capsule (10) has one end (12) for fixing to a lighting fitting and an elongated trough (26) with supporting members (30). The ball end (18) of a light module rod (20) is held by the arms (32) and ends (34) of the supporting members but may slide along the trough. Additional support to the rod is provided by an additional component which slides into the trough and holds the ball end in an orifice