Toyota Tercel Instrument Panel Bulb Size

The Toyota Tercel instrument panel utilizes bulb size 194 and bulb size 74 for illumination across various production versions. Data for the specified components covers the period from 1980 through 1998.

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
1991-1998	194
1981-1986	194
1980	74

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, 1.4W.	74

Other Locations

Additional Notes

The Toyota Tercel instrument panel uses the 194 bulb across the 1981-1986 and 1991-1998 model years, making it the dominant fitment in the specifications.
The 194 is an ANSI-standard miniature wedge bulb rated at 12V and 3.78W, housed in a T10 wedge base, which is among the most widely used instrument panel bulb formats in North American vehicles.
The 1980 Toyota Tercel instrument panel takes the 74 bulb, which differs from all other listed model years in both bulb type and wattage.
The 74 is an ANSI-standard miniature wedge bulb rated at 12V and 1.4W in a T5 wedge base, drawing significantly less power than the 194.
The T5 and T10 designations refer to the bulb's tubular envelope width, measured in units of one-eighth of an inch, meaning the T5 is 5/8 inch wide and the T10 is 10/8 inch wide. These two sizes are not interchangeable.
Because the 1980 model year uses a physically smaller T5 base rather than the T10 base found in all other listed years, substituting a 194 bulb into a 1980 Tercel instrument panel socket is not a compatible fitment.
Both the 194 and 74 bulbs conform to ANSI standards applicable in the United States and Canada, indicating consistent regulatory classification across the two bulb types used in these specifications.
The wattage difference between the 74 (1.4W) and the 194 (3.78W) reflects the smaller filament and envelope of the T5 format relative to the T10, a distinction relevant to socket and circuit compatibility.