Ford Aerostar Glove Box Bulb Size

The Ford Aerostar glove box utilizes 194, 1893, and 1816 bulb sizes depending on the specific version of the vehicle. Available data covers the range from 1986 through 1997.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
1994-1997	194
1991-1993	1893
1986-1990	1816

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W.	1893
ANSI standard (US & Canada). Miniature wedge bulb (T3.25). 12V, 4W.	1816

Other Locations

Additional Notes

The Ford Aerostar glove box uses three distinct bulb types across its model years: the 194, 1893, and 1816, all of which conform to ANSI standards recognized in both the United States and Canada.
All three bulb types are miniature wedge-base designs, meaning they use a plastic wedge base rather than a metal contact pin, allowing the bulb to be inserted directly into a socket without a separate holder.
The 194 bulb is a T10 wedge type rated at 12V and 3.78W, and it fits the Ford Aerostar glove box for the 1994-1997 model years.
The T10 designation refers to the bulb envelope width expressed in eighths of an inch, making the T10 roughly 10/8 of an inch wide, which is the largest envelope among the three bulb types specified here.
The 1893 bulb is a T5 wedge type rated at 12V and 2W, and it applies to the 1991-1993 model years. At 2W, it draws less power than either the 194 or the 1816.
The 1816 bulb is a T3.25 wedge type rated at 12V and 4W, and it covers the 1986-1990 model years. Its 4W rating makes it the highest-wattage bulb among the three types listed in these specifications.
The T3.25 envelope of the 1816 is physically smaller than the T5 of the 1893 and the T10 of the 194, which means the three bulb types are not interchangeable despite sharing the same 12V operating voltage.
Although all three bulbs operate at 12V, differences in wattage and physical size mean that substituting one type for another risks either a poor socket fit or an incorrect light output level for the glove box application.