A quick-disconnect waterproof connector for secure connection of electrical wires to one another in series, in applications where water or other fluids may be present. The most preferred connector has two connecting members each with opposing ends, a pin adjacent to a socket in side-to-side array at a first of said opposing ends, over-molding around the pin and socket, a plurality of external ribs laterally extending across the over-molding on opposing sides thereof, the over-molding around the base of the pin having a tapered boss, the over-molding extension around the distal end of the socket configured for snugly receiving the tapered boss of its paired member to create a waterproof connection, two sheathed insulated wires each connected to one of the contacts, and the over-molding also having on its second end a strain-relief extension positioned around the sheathed insulated wires as they enter the over-molding.