A cover assembly for an electrical connector at the end of a sheathed cable containing several insulated wires. An insulation piercing clip couples light bulb leads to the wires. A translucent housing encloses the light bulb, said insulation piercing clip, the entire section of unsheathed insulated wires, a portion of the electrical connector and a portion of the sheathed cable. The cover assembly is illuminated by the light bulb when power flows through the electrical connector and may be color coded to indicate connector function.