Cadillac DeVille Dome Light Bulb Size

Additional Notes

• The Cadillac DeVille dome light draws from several distinct bulb families across its production history, including festoon, wedge, and bayonet-base types, reflecting changes in automotive interior lighting standards over several decades.
• The 214-2 is the most consistently applied bulb in these specifications, serving as the dome light bulb for the Cadillac DeVille across the 2000-2005 model years without variation. It is a festoon-type bulb with a 41mm length, SV8.5 base, rated at 12V and 12W.
• The 211-2 and 212-2 share the same physical format as the 214-2, both being 41mm festoon bulbs with an SV8.5 base at 12V and 12W. Despite these identical characteristics, the specifications treat them as distinct part numbers, and substituting one for another without confirming fitment compatibility is not advised.
• The 212-2 was the specified dome light bulb for the DeVille across the 1965-1970 model years, as well as 1976, making it one of the longer-running festoon fitments in the earlier portion of the vehicle's history.
• The 1004 is a dual-filament bulb with a BAY15d bayonet base, rated at 12V with a 21/5W output, and is a variant of the 1157. Its use as a dome light bulb is notable given that dual-filament bulbs are more commonly associated with exterior signal and brake lighting applications.
• The 1004 appears across a wide span of model years in these specifications, including 1953-1957, 1959-1960, 1963-1964, 1975, 1980, and 1984, making it one of the most frequently recurring bulb types in the DeVille dome light history.
• The 562 is a festoon bulb with a 44mm length and end-cap contacts, rated at 12V and 12W. It differs physically from the 211-2, 212-2, and 214-2 festoon types due to its longer body and different contact style, meaning these festoon variants are not interchangeable despite sharing a general form factor.
• The 912 is a T15 wedge bulb rated at 12V and 12W, and is classified as a variant of the 921. It was specified for the DeVille dome light from 1985-1988. The 906, a smaller T10 wedge bulb rated at 12V and 8W, was specified for 1990 and 1992, and the two wedge types are not interchangeable due to differences in size and wattage.
• The bulb numbered 161 is a T10 miniature wedge type rated at just 1W, making it significantly lower in output than all other bulb types listed in these specifications. It was specified solely for the 1971 model year.
• The bulb numbered 90 uses a BA15s single-filament bayonet base and is rated at 12V and 13W. It was specified for the 1958, 1961, 1972, and 1973 model years. The BA15s base is a single-contact bayonet fitting, distinct from the dual-contact BAY15d base used by the 1004, and the two base types are not interchangeable.