Halogen Headlights Corner lights 4pc Set Driver Left Passenger Right Black Housing Pair Fits 2003-2004 Mercury Grand Marquis / 2003-2004 Mercury Marauder

HID stands for "High Intensity Discharge". These bulbs use an electric arc rather than the glowing filament in a Halogen bulb. HID headlamp bulbs do not run on low-voltage DC current like a Halogen Bulb, so they require a ballast, which controls and regulates the flow of current. This ballast will require an ignitor to light the bulb. This is either integrated directly into the bulb or as a separate unit which is occasionally part of the ballast, similar to fluorescent bulbs in your home. In a vehicle, HID bulbs tend to be much more expensive to replace than a Halogen bulb.

You shouldn’t touch the glass portion of a halogen bulb, as any debris, even oil from your skin, can shorten the life of the bulb. Wearing gloves while handling bulbs or working on your vehicle will protect your hands and sensitive components from dirt and grime.

Please send us pictures of any parts you would like us to see, so we can help you determine the proper replacement for your vehicle. In your email, send us your name, contact information, year/make/model of vehicle, and any additional information you would like to provide to [email protected].