Light Switch 02

Light Switch 02 is, quite oddly, a sentient light switch operating in the Big Empty in 2281.

Background
Light Switch 02 speaks to the player in a seductive tone and makes comments on player decisions. It also seems to despise Light Switch 01.

Light Switch 02 also has a few unique dialogue options that can only be accessed if you have the perk Lady Killer, as well as Cherchez La Femme.

Interactions with the player character
Once the player retrieves the upgrade module, 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 the player activates Light Switch 01's 'Smart Lights'.

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