Oldsmobile 98 Dome Light Bulb Size

Additional Notes

• The Oldsmobile 98 dome light specifications span from 1953 to 1994, covering seven distinct bulb types across that period.
• The 1004 bulb is the most frequently specified type in these records, appearing in the Oldsmobile 98 from 1953 through 1967, with the exception of 1965. It is a dual-filament bulb with a BAY15d bayonet base, rated at 12V and 21/5W, and is a variant of the widely known 1157 bulb.
• The 211-2 is the second most common bulb type in these specifications. It is a festoon bulb with an SV8.5 base, 41mm in length, rated at 12V and 12W, and follows the ANSI standard for the US and Canada.
• The 212-2 shares the same physical format and electrical rating as the 211-2, both being 41mm festoon bulbs with an SV8.5 base at 12V and 12W. Despite these similarities, the two are listed as separate ANSI designations and are not confirmed as interchangeable within these specifications.
• The 561 and 562 are both 44mm festoon bulbs with end-cap contacts, rated at 12V and 12W. As with the 211-2 and 212-2 pairing, these share identical physical and electrical characteristics yet carry distinct ANSI designations.
• The 906 is a miniature wedge bulb of the T10 type, rated at 12V and 8W. At 8W, it draws less power than the festoon types used in earlier model years of the 98.
• The 161 bulb, specified for the 1971 model year, is also a T10 miniature wedge type but is rated at only 1W, making it the lowest-wattage bulb across all years in these specifications.
• The 1991-1994 model years all use the 906 wedge bulb, while the 1985-1990 model years use festoon-type bulbs, indicating that a direct swap between these two groups would require attention to base type compatibility.
• All bulb types listed in these specifications conform to ANSI standards applicable in both the US and Canada, and all operate on a 12V electrical system.
• The 1980 model year is the only one in the entire specification range to use the 562 bulb, setting it apart from the surrounding years that use either the 561 or the 211-2/212-2 festoon types.