Chevrolet Chevette Glove Box Bulb Size

Additional Notes

• The Chevrolet Chevette uses two different glove box bulb sizes across its 1976-1987 model years: the 1891 and the 1893.
• Both the 1891 and 1893 are ANSI-standardized bulbs recognized in the United States and Canada, each rated at 12 volts and 2 watts.
• Both bulbs share the T5 miniature wedge form factor, meaning they are physically similar in construction and base type.
• Despite their shared T5 form factor and identical voltage and wattage ratings, the 1891 and 1893 carry distinct part numbers, which indicates they are not confirmed as interchangeable for this application.
• The Chevrolet Chevette (1976-1980) uses the 1893 bulb for the glove box, covering the 1976, 1977, 1978, 1979, and 1980 model years.
• From 1981-1987, the Chevette transitions to the 1891 bulb for the glove box position, representing the later and longer-running fitment across this model's production span.
• The T5 designation refers to a tubular bulb with a width of five-eighths of an inch, a standard sizing convention used in miniature automotive lighting.
• At 2 watts, both bulbs draw minimal current, which is typical for interior illumination tasks such as glove box lighting where low heat output is practical in an enclosed space.