All My Friends Have Off Switches

 is a main story quest in the Fallout: New Vegas add-on, Old World Blues. After completing the quest, you'll be awarded with the "Making Friends" Trophy/Achievement.

Quick walkthrough

 * Go to the Sink and install the Sink Central Intelligence Unit.
 * Find the missing module for the Sink Project: Sink in the Magnetohydraulics Complex.
 * Find the missing module for the Sink Project: Auto-Doc in the Y-17 Medical Facility.
 * Find the missing module for the Sink Project: Biological Research Station in the X-22 Botanical Garden.
 * Find the missing module for the Sink Project: Jukebox in House #108 of Higg's Village
 * Find the missing module for the Sink Project: Book Chute in House #101 of Higg's Village
 * Find the missing module for the Sink Project: Light Switch 01 in the X-2 Transmitter Antenna Array
 * Find the missing module for the Sink Project: Light Switch 02 in Big MT North Tunnel
 * Find the missing module for the Sink Project: Muggy on a truck ouside the Securitron De-Construction Plant
 * Find the missing module for the Sink Project: Toaster in The Cuckoo's Nest
 * Return to the sink to install the modules after finding all of them.

Detailed walkthrough
After receiving the Central Intelligence Unit from the doctors in the Think Tank, proceed to The Sink, activate the Central Circular Structure in the Sink and then install the Central Intelligence Unit. After this the player must locate the modules for the other utilities in Sink. The first one, the Sink, is located in the Magnetohydraulics Complex, inside the small building, on a desk against the back wall with a ruined terminal. Next comes the Auto-Doc, which can be found in the Y-17 Medical Facility on a desk on the upper level of the facility. The next module, the Biological research station, located along a fallen girder in the center of the X-22 Botanical Garden. Then comes the Jukebox located on a desk in the the left second floor room of House #108 of Higg's Village. Following this comes the Book Chute, on the desk in the second floor office of Higg's Village House #101. Light Switch 01's module can be found in the X-2 Transmitter Antenna Array, leaning against a coffe maker on the ground floor. It's counterpart, Light Switch 02, can be found on a storeroom shelf just inside Big MT North Tunnel. After this is Muggy's, located in the back of a truck in front of the entrance of the Securitron De-Construction Plant. Finally comes the Toaster, located in a shrine to the right from the entrance inside the Cuckoo's Nest. After this, return to the Sink to activate the utilites, which can be shut down from the Sink Central Intelligence Unit.