Chevrolet Corvette Glove Box Bulb Size

Additional Notes

• The 194 bulb is the most frequently specified glove box bulb across the Chevrolet Corvette lineup, appearing in model years 1979-1980, 1990-1993, and 1997-2013. It is a T10 miniature wedge bulb rated at 12V and 3.78W under the ANSI standard.
• The 1895 bulb is the second most common type in these specifications, used across the 1968-1977 model years. It is a T5 miniature wedge bulb rated at 12V and 0.9W, making it the lowest-wattage wedge type listed in the data.
• The T5 wedge form factor is shared by three distinct bulb numbers in these specifications: the 1891 (2W), the 1893 (2W), and the 1895 (0.9W), as well as the 1896 (0.9W). Although the 1891 and 1893 share the same voltage and wattage ratings, they carry different ANSI designations and are not listed as interchangeable.
• The 1893 bulb, used in the Chevrolet Corvette for the 1964-1967 model years, shares its 12V, 2W rating with the 1891 bulb used in 1981-1982 and 1984. Despite identical electrical ratings, substituting one for the other without confirming base and physical compatibility would be inadvisable given their separate ANSI classifications.
• The 561 festoon bulb, specified for the 1995 Corvette, is electrically distinct from all other bulbs in the data. At 12V and 12W, it draws significantly more power than any other listed type and uses end-cap contacts along a 44mm body rather than a wedge base.
• The 257 bulb, used in the 1958-1959 and 1961-1963 model years, is listed as either a festoon or BA9s base instrument bulb rated at 12V and 2W. The dual base designation in its description indicates that physical fitment can vary depending on the specific socket configuration present in the vehicle.
• The 57 bulb, specified for 1955-1957 and 1960, uses a BA9s bayonet base and is rated at 12V and 1W. It is the only single-filament BA9s-base bulb in the specifications and is not electrically or physically equivalent to the 257, despite both types appearing in adjacent model years.
• The 1896 bulb, used in the 1953-1954 Corvette, is a T5 miniature wedge type rated at 12V and 0.9W, matching the wattage of the 1895. The two bulbs share the same electrical rating but carry different ANSI numbers, and their interchangeability cannot be assumed from the specifications alone.
• All bulb types listed across the full range of Corvette model years in these specifications conform to ANSI standards applicable in both the United States and Canada, and all are rated for 12V electrical systems.
• The wedge base and festoon base represent the two distinct contact types present across these specifications. Wedge-base bulbs, including the T5 and T10 types, are retained by socket friction alone, while festoon and BA9s-base bulbs rely on end-cap pressure or a bayonet-style pin fit, making the base type a critical factor in fitment.