Wild Card: Finishing Touches

 is a main quest in Fallout: New Vegas.

Quick walkthrough
The Courier is tasked to visit the El Dorado substation and plant a chip to extend the Yes Man's broadcasting range.

Detailed walkthrough

 * You will be given this quest once you finished the Wild Card:Side Bets and Wild Card: You and What Army? quest from Yes Man. It requires you to upload an override chip into the El Dorado substation controlled by the NCR. An optional objective to the quest is for you to save President Kimball when he arrives to give his speech.


 * The main part of this mission is very simple. Go to the El Dorado substation and upload the override chip into the terminal located inside. There will also be a few NCR troops inside though that will shoot on sight so try to sneak in with a Stealth Boy if possible. The best way is to wear NCR armor, the guards don't attack you that way. If you did the optional part of this quest and kill the troops in the substation it will not matter to your reputation because you are so liked. Another way to avoid being attacked by the NCR troops in the substation is to immediately exit it once you've entered it. When you then enter it a second time, the NCR troops will not attack you.


 * Optional: Yes Man asks you to convince the Followers of the Apocalypse to give full assistance to the New Vegas region; simply go and talk to Julie Farkas. There appears to be no way that she'll decline, so once you're done just report back to the Lucky 38 and complete your quest.