Mazda 929 Dome Light Bulb Size

Additional Notes

• The Mazda 929 dome light specifications span model years 1988 through 1995, covering four distinct bulb sizes across that range.
• The 194 bulb is the most frequently specified type in these records, appearing in the 1992-1993 and 1995 model years. It is a T10 miniature wedge bulb rated at 12V and 3.78W, conforming to ANSI standards for the US and Canadian markets.
• The wedge base of the 194 bulb is a self-retaining design that seats directly into a socket without a separate holder, which distinguishes it from the festoon types used in other model years of the 929.
• Three of the four bulb types specified for the 929 are festoon bulbs: the DE3022, DE3175, and 214-2. Festoon bulbs make contact at both ends of the bulb body rather than through a base, and they are held in place by spring clips within the fixture.
• The 1988-1989 model years share the DE3022, a 31mm festoon bulb with end-cap contacts rated at 12V.
• The DE3175 specified for the 1994 model year is also a 31mm festoon bulb with end-cap contacts rated at 12V, sharing the same physical length as the DE3022. Despite this dimensional similarity, the two are listed under separate ANSI designations and are not confirmed as interchangeable within these specifications.
• The 214-2 festoon bulb, specified for the 1990-1991 model years, has a 41mm length and an SV8.5 base. At 12W, it carries a notably higher wattage than the other bulb types listed in these specifications.
• The SV8.5 base designation on the 214-2 refers to a festoon base with a nominal 8.5mm cap width, which is a different socket format than the end-cap contact style used by the DE3022 and DE3175.
• The 1994 model year stands alone in specifying the DE3175, making it the only year in this range that uses that particular bulb designation.
• All four bulb types in these specifications conform to ANSI standards applicable to the US and Canadian markets, and all operate at 12V, consistent with standard automotive electrical systems.