Abstract: An underwater wall mounted light fitting having a sealed or sealable light source chamber having a lens and a sealable electrical supply connection chamber including a port to sealingly engage over an electrical supply line with a dividing wall of insulating material provided between the two compartments and an array of electrical conductive connectors embedded in the dividing wall and each providing a connection terminal on opposite sides of the wall within the chambers respectively. The dividing wall is moulded around the connectors which are provided as rigid spigots with circumferential grooves to receive the moulded wall material. Grub-screws into cross passages are used to engage the electrical wire in each spigot. The connection chamber is a hollow cover with the port which includes a compression gland assembly for an electrical supply line.