Chevrolet Corvair Glove Box Bulb Size

Additional Notes

• The Chevrolet Corvair glove box uses two distinct bulb types across its production run: the 1895 and the 257, both of which conform to ANSI standards recognized in the United States and Canada.
• The 1895 is a miniature wedge bulb in the T5 form factor, rated at 12 volts and 0.9 watts, representing one of the lower wattage options found in automotive interior lighting applications.
• The 257 is rated at 12 volts and 2 watts, and it is available in either a festoon or BA9s base configuration, meaning the physical base style can vary while the bulb number remains the same.
• The 1895 and 257 are not interchangeable. The 1895 uses a wedge base, while the 257 uses either a festoon or BA9s base, making the mounting and socket type fundamentally different between the two.
• The Chevrolet Corvair (1965-1969) specifies the 1895 bulb for the glove box, with this fitment remaining consistent across all five of those model years.
• The 1960-1964 model years specify the 257 bulb for the glove box, also remaining consistent across that five-year span.
• The wattage difference between the two bulb types is notable: the 257 draws more than twice the wattage of the 1895, which reflects a difference in light output between the two generations of fitment.
• The BA9s base referenced in the 257 description is a bayonet-style single-contact base with a 9mm cap, commonly used in instrument panel and interior courtesy lighting of that era.