Light Box Upgrade Kit (minor), consists of later style lamp socket assembly, with two 2 pin 'QI' lamps (one to use and one spare). NOTE: The tooling for the old style lamp socket that carried the PA2041-003 lamp is gone and the old socket is no longer available. This item is the IEC replacement socket to accept 2 pin 12V.30W. QI lamp PA2043-002, including 'keeper' plate to retain the socket in the light box top plate and 2xcore cable with stackable banana plugs moulded to the cable. This new socket fits directly into the same hole as the old socket. See also PA2060-055 for the major Upgrade. Read the PDF file for more information.