Installing Mods in The Sims 4 The process for downloading both CC and Mods is the same, so we will cover them both at once. They are installed in Documents/Electronic Arts/The Sims 4/Mods. Open Windows Explorer or Finder on Mac. Click your Documents folder, Electronic Arts, then The Sims 4. If you have trouble finding it, look for the Users folder on C:, click the User of the PC (in my case, Car..