Review on Motorcraft- SW6833 Switch: Enhance Performance and Durability by Kevin Hernandez

Google finds a video on how to replace the switch, it's not difficult. My 2014 Mustang had a light sensor in the center of the dash, make sure you have it too, I believe it's part of the MyColor option. After installation you have automatic headlights, they light up at night and together with the wipers. The only thing you don't get is the programmable turn off time that you get when you buy a car with automatic lights. The light goes out approximately 10 seconds after the vehicle is locked.