System automatically switches the headlamps on for your day or nighttime trips. This system automatically activates the low-beams at 75% of their normal operating power whenever the ignition is in the “on” position. Keeps you visible on the road and in the eyes of other drivers and pedestrians.  Engineered for complete integration with your Mustang's electrical system.

• Turns on low-beam headlights at 75% of their normal operating power 
• Keeps you safe and visible to other drivers and pedestrians
• Engineered for a complete integration with your Mustang's electrical system
• Dealer installation is recommended

So make the right decision for your Ford Mustand and choose the quality of OEM.