Mixed Signals

 is a quest in the Fallout: New Vegas add-on Dead Money.

The quest starts after your entire team is gathered at the fountain. The objective of this quest is to get Christine into the Switching Station so she will be able to reroute power to fuel the Gala that Father Elijah told you about. This is one of the three quests where you scatter your team through the area, putting them in specific places so that you can continue onward with getting into the Sierra Madre Casino.

Quick walkthrough

 * There is a room Christine has to be lead to with a fuse box, a locked door and a radio behind said door. In order to open the door, you need to find the fuses. One can be found in a toolbox in the same room. Another can be found in a toolbox on the roof where Father Elija's radio signal can be picked up. The other seems to be above a door to the service route (which requires a key), placed behind a gate with a Very Hard lock on it. The gate is in the middle of a gas field.
 * The fuse box can also be put back into working condition with Repair 60, therefor bypassing the need for the three fuses. Also, watch out for the various shielded speakers around the main room. They can be turned off with terminals near them.

Detailed walkthrough

 * Pick up Christine, then head west, following the signs for Puesta del Sol. Follow your mission marker to the switch station, fighting Ghost People and avoiding the poison clouds.
 * Once inside the switch station you will need to repair the switch box on your immediate left. You can either rig it (repair 60) or you can go back into the streets to locate 3 fuses.
 * if you require 3 fuses you can find one in a tool box in the switch station, one on the rooftop of a nearby house, and the final one inside a toolbox in a settlement that can only be reached by climbing across the 'balcony' style edging on the houses.
 * Additional Information on the 3 fuses locations:
 * In the room with the locked door in a toolbox on the floor.
 * Go back out the door you came in, and just a few metres to the right is another. It is in the toxic gas so be careful.
 * From that very same door follow these directions; turn immediately left, go down the large stairway and turn left under an archway, keep following left. Keep going until you can turn right. You should see an opening to a building that's well lit. Go into here and proceed up to the top floor. From there you can follow out onto a balcony. Here there is a toolbox with the third fuse.
 * Once you have supplied power to the door, step through and destroy the radio transmitter on the right, then follow the walkway down until you reach the main area.
 * On this walk you will encounter several more radio transmitters on the walls. They can easily be located and destroyed by paying attention to the graffiti that someone has sprayed around the place. However, it is easy to run past these sections thanks to Christine's perk.
 * In this main room follow the walkway around until you reach a section that hangs above a pipe. Jump onto the pipe then run to the end and jump off again. Once you land on the floor make a quick dash for the stairs ahead of you to avoid damage from the poison.
 * Follow the stairs up, then turn left and you will come to a door (if your collar starts to beep you've gone the wrong way). Go strait through to the next room and activate the ventilation system to remove some of the gas outside and all the gas on the basement of the switch station.
 * You can now go back to the basement. If you want you can now safely explore the previous room for a few spare Sierra Madre Chips and a skill book.
 * If you can pick the lock on the locker to your left, you can get a password for the console in the next room. Alternatively, you can find the key on a desk with a working terminal in far right corner (as you enter the room).
 * Now go through the door, ignore the beeping, and destroy the turret that attacks you. Follow the walkway around jumping over the pipe and go the console.
 * If you have the password you can make it easy for Christine to active her switch.
 * If not you will have to force her into the basement. (It may be possible to make it remotely accessible another way)
 * Go out through the elevator.