Multi-Functional. During the day, this kit will allow your turn signals to function as Daytime Running Lights, but they will automatically turn off when you switch on your headlights for night driving. They continue to function as normal turn signals at all times.
Application. The Daytime Running Light (DRL) module simply splices into the turn signals of your 2005-2009 Mustang.
Technical Note. This DRL kit does not work with Mustangs equipped with HID Headlights.