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<Giggle> Who's ready for a party?

Light Switch 02 is an Automated Personality operating in the Big MT in 2281.


Light Switch 02 speaks to the Courier in a seductive tone and makes comments on their decisions. She is also in a rivalry with Light Switch 01, referring to her as "that frigid little ice queen."

Interactions with the player character[]

Interactions overview[]

FO76 ui icon quest
This character is involved in quests.


Effects of player's actions[]

  • Once the upgrade module is retrieved, Light Switch 02 can bathe the Courier in "Mood Light", increasing their Charisma by 2 points, and their Speech and Barter skills by 5 points each. The effect lingers for 12 hours after initial exposure, or until Light Switch 01's "Smart Lights" are activated.
  • Without the upgrade module, it is only possible to use the light switch to toggle the normal lights while the Personality Matrices are toggled off at the Sink CIU.
  • The Courier can flatter her using the Cherchez La Femme or Lady Killer perks, resulting in receiving a Meeting People magazine.


  • If the player character interacts with the other light switch, she will notice, and will bring it up the next time she is engaged in conversation.
  • There is a dialogue option of Light Switch 02 knowing that the mood lights upgrade were found, but it is not present in the game.

Notable quotes[]


Light Switch 02 appears only in the Fallout: New Vegas add-on, Old World Blues


PCPC The "Smart Light" and "Mood Light" bonuses are applied to the player character only when one enters dialogue with the light switch and toggles such light. So, after the light is toggled, when the bonuses passes, just re-entering the Sink and be exposed to the light will not be enough to get the bonuses again.

  • In this case, to get again the bonuses of the light already toggled, it is needed to first toggle any other type of light (even normal light or lights off will work) and then toggle to the desired light again.