Oldsmobile Cutlass Supreme Map Light Bulb Size

Additional Notes

• The 561 bulb is the most frequently specified map light size across the Oldsmobile Cutlass Supreme model range, covering the 1991 and 1993-1996 model years, as well as the 1987 model year when equipped with halogen capsule headlamps.
• The 561 is a festoon-type bulb rated at 12V and 12W, with a 44mm length and end-cap contacts, conforming to the ANSI standard for the US and Canadian markets.
• The 562 bulb shares the same festoon construction, 44mm length, end-cap contact design, voltage, and wattage as the 561, making the two bulbs technically very similar in specification.
• Despite their near-identical specifications, the 561 and 562 are listed as distinct part numbers across different model years of the Cutlass Supreme, and substitution between them warrants verification before installation.
• The 212-2 is also a festoon bulb but with an SV8.5 base rather than end-cap contacts, and a slightly shorter 41mm length, distinguishing it physically from the 561 and 562 despite sharing the same 12V, 12W rating.
• The 1004 bulb is specified for the Oldsmobile Cutlass Supreme across the 1976-1984 model years, as well as the 1987 model year when equipped with sealed beam headlamps, representing the longest consecutive run of a single bulb type in these specifications.
• The 1004 is a dual-filament bulb with a BAY15d bayonet base, rated at 12V and 21/5W, and is noted as a variant of the widely known 1157 bulb type.
• The 1990 model year uses the 90 bulb, a single-filament type with a BA15s bayonet base rated at 12V and 13W, which is distinct from all other bulb types listed across the Cutlass Supreme range.
• The 1971 model year is specified with the 194, a miniature wedge bulb in the T10 form factor rated at 12V and 3.78W, the lowest wattage of any bulb type in these specifications.
• The 1987 Oldsmobile Cutlass Supreme has two separate map light bulb specifications depending on headlamp type, with the 561 applying to halogen capsule headlamp variants and the 1004 applying to sealed beam headlamp variants, indicating that headlamp configuration is a critical fitment variable for that year.