Mercury Mystique high beam headlight bulbs use 9005 size while low beam headlight bulbs use 9006 size. The replacement chart covers 1995 to 2000 vehicle production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mercury Mystique uses the 9005 bulb for high beam headlights and the 9006 bulb for low beam headlights across all model years from 1995-2000.
Both the 9005 and 9006 are single-filament halogen bulbs operating on a 12-volt electrical system, which is standard for automotive applications of this type.
The 9005 carries a 65-watt rating, while the 9006 is rated at 55 watts, reflecting the differing power demands between high and low beam functions.
The 9005 uses a P20d base and the 9006 uses a P22d base. These two base types are physically distinct, meaning the bulbs are not interchangeable between the high and low beam positions.
Both bulb types conform to ANSI standards applicable in the United States and Canada, indicating they meet a defined set of performance and dimensional criteria for those markets.