Oldsmobile Cutlass Map Light Bulb Size

Additional Notes

• The Oldsmobile Cutlass map light specifications cover two distinct bulb types across the 1976-1981 model years: the 1004 and, for earlier and later periods, festoon-style bulbs.
• The 212-2 is a festoon bulb with an SV8.5 base and a 41mm length, rated at 12V and 12W. It is the specified map light bulb for the 1997-1999 Oldsmobile Cutlass.
• The SV8.5 base on the 212-2 refers to a metal end-cap contact style with an 8.5mm cap width, which is a common festoon base format in automotive interior lighting.
• The 1004 is a dual-filament bulb with a BAY15d bayonet base, rated at 12V and 21/5W. It serves as the map light bulb for the Cutlass across the 1976-1981 model years.
• The 1004 is noted as a variant of the 1157, a widely used automotive bulb. Despite this relationship, the two are not directly interchangeable due to differences in pin spacing and wattage configuration.
• The BAY15d base on the 1004 features two offset pins, a design that prevents incorrect installation by ensuring only one rotational orientation fits the socket.
• The 562 is a festoon bulb with end-cap contacts and a 44mm length, rated at 12V and 12W. It is specified for the 1973 Cutlass map light.
• Although the 212-2 and 562 share the same voltage and wattage ratings, their physical lengths differ at 41mm and 44mm respectively, making them non-interchangeable despite similar electrical characteristics.
• The 194 is a miniature wedge bulb in the T10 form factor, rated at 12V and 3.78W. It is the specified map light bulb for the 1971 Cutlass, and its wattage is notably lower than all other bulb types listed in these specifications.
• All bulb sizes listed across these specifications conform to ANSI standards applicable in both the United States and Canada.