The Buick Park Avenue side marker requires a 194 bulb size for proper illumination and function. Available data covers the period from 1997 through 2005 for the specified vehicle component.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Buick Park Avenue uses three distinct bulb types across its side marker positions: the 194, 194NA, and 24, each serving specific model years and locations.
The 194 is a T10 miniature wedge bulb rated at 12V and 3.78W, conforming to ANSI standards for the US and Canadian markets. It fits the front and rear side marker positions on the Park Avenue for model years 1997-2005.
The 194NA shares the same T10 wedge form factor, voltage, and wattage as the 194 but is distinguished by a natural amber glass envelope. It occupies the front side marker position on the Park Avenue for model years 1991-1996.
Because the 194 and 194NA are physically identical in base type and electrical ratings, the amber tint of the 194NA is integral to producing the required front marker color on the 1991-1996 Park Avenue. Substituting a clear 194 in that position would alter the emitted light color.
The 24 is a single-filament bulb with a BA9s bayonet base, rated at 12V and 2W. Its base type is physically incompatible with the T10 wedge socket used by the 194 and 194NA, making cross-substitution between these bulb families impossible without a socket adapter.
The 24 bulb fits the rear side marker position on the Park Avenue for model years 1991-1996, while the 194 takes over that same rear position for 1997-2005.
The rear side marker socket changed between the 1996 and 1997 model years on the Buick Park Avenue, transitioning from the BA9s-based 24 to the T10 wedge-based 194. This represents a hardware change requiring attention when sourcing replacement bulbs for vehicles near that boundary year.
At 2W, the 24 bulb draws notably less power than the 3.78W 194 and 194NA. This difference is relevant when evaluating electrical load on the marker circuit, particularly in older 1991-1996 vehicles.