With both the base assembly and riser knuckle disassembled, you can easily remove the socket for replacement by feeding wire out the top. Feed the socket wire through the top portion of the knuckle assembly. Make sure the O-Ring is in place before feeding the socket wire through the bottom portion of the knuckle assembly. Feed the socket wire through the bottom portion of the knuckle assembly. Before re-connecting the two parts of the knuckle assembly, and tightening the screw, take care to set the O-ring in place.