So I promised my wife I would add factory fog lights to her car. I found them brand new, wiring is already installed, but what else do I need to do to get them to work? Does the headlight switch control them or is there another switch just for them? Fuses, relays? I've looked into the switches and no one has a fog light switch listed, just 2 different headlight switches; one with fog lights and one without. Thanks in advance.