After receiving the personality holodisk for the Sink Central Intelligence Unit from Dr. Klein in the Think Tank, the Courier should proceed to The Sink, activate the Central Circular Structure, and then install the Central Intelligence Unit's personality holotape. The quest Influencing People, in which the Courier must track down the extra functions for each utility, may then be initiated to activate the other Sink utilities. If so desired, the other personality modules can be shut down from the Sink Central Intelligence Unit at a later time, but the first step is to track them down.
The Courier may then locate modules for the Sink's other utilities to reactivate them. The holotapes may be found in any order, while optionally doing other quests in the Big MT, but the quest's objectives to find them are listed in the following order:
The holotape for the actual Sink is located in the magnetohydraulics complex inside the smallest building, on a desk against the back wall with a ruined terminal.
The module for the Jukebox named "Blind Diode Jefferson" is found on a desk in the left second floor room of House #108 in Higgs Village. While there, investigate the jukebox that is face down on the floor for another useful part.
The module for the Book Chute is found on the desk in the second floor office of the village's House #101.
xbox360ps3pc Sometimes, after collecting the holotape in the X-22 Botanical Garden, the quest marker will remain on the Y-17 Medical Facility. It will only disappear upon completion of the quest. [verified]
ps3pcxbox360 It is possible that after recovering all of the modules, the game does not recognize all of them, and the quest will not progress. To fix this bug in the console, type completequest [DLC ID]0112e3 or install them only when the quest tells you to install them. [verified]
pc Sometimes if you collect upgrades early in the quest it will be stuck pointing to that part of quest where you've already taken it even though you picked it up already. [verified]
pc Installing the Sink's main holotapes before the quest part install the holotapes at Sink with will be stuck there. [verified]
pc When in possession of any of the holotapes the game may crash on fast travel. [verification overdue]