Toyota Corona Ash Tray Bulb Size

The Toyota Corona ash tray utilizes bulb sizes 74 and 194 for illumination. Data for the specific components covers the range from 1978 through 1982.

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
1981-1982	74
1978-1980	194

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 1.4W.	74
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

The Toyota Corona ash tray bulb specifications cover the 1978-1982 model years, with two distinct bulb types used across that span: the 74 and the 194.
The 74 bulb is an ANSI-standard miniature wedge type in a T5 form factor, rated at 12V and 1.4W, and was fitted to the 1981-1982 Corona ash tray position.
The 194 bulb is also an ANSI-standard miniature wedge type, but in a larger T10 form factor, rated at 12V and 3.78W, and was fitted to the 1978-1980 Corona ash tray position.
Although both the 74 and 194 are miniature wedge bulbs operating on 12V, their T5 and T10 form factors are not interchangeable, as the physical socket sizes differ.
The 194 draws approximately 2.38W more than the 74, reflecting a meaningful difference in power consumption between the two bulb types used across these model years.
Both bulb types conform to ANSI standards applicable in the United States and Canada, indicating standardized electrical and physical tolerances shared across many vehicle applications of that era.