Toyota T100 Courtesy Bulb Size

The Toyota T100 courtesy light utilizes 168, DE3022, and DE3175 bulb sizes depending on the specific production period for the vehicle. Data for the lighting components spans from 1993 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
1998	DE3022
1997	168
1995-1996	DE3175
1994	DE3022
1993	DE3175

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3022
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175

Other Locations

Additional Notes

The Toyota T100 courtesy bulb specifications span the 1993-1998 model years, with three distinct bulb types appearing across that range: DE3022, DE3175, and 168.
The DE3175 and DE3022 are both ANSI-standard festoon bulbs operating at 12V with end-cap contacts and a 31mm length, making them physically similar in form factor.
Despite sharing the same physical length and contact type, the DE3175 and DE3022 carry different part designations, and the specifications treat them as distinct, non-interchangeable bulbs for the Toyota T100.
The 168 bulb is a T10 miniature wedge type, rated at 12V and 4.9W under the ANSI standard, and represents a fundamentally different form factor from the festoon bulbs also listed in these specifications.
The wedge-type 168 bulb is specified exclusively for the 1997 model year, while festoon-type bulbs cover all other years in the range.
The DE3175 is specified for the 1993, 1995, and 1996 model years, while the DE3022 is specified for the 1994 and 1998 model years, indicating that the same physical year of production does not guarantee the same bulb fitment across the full model run.
All three bulb types conform to ANSI standards applicable in both the United States and Canada, meaning they are sourced from a standardized North American specification rather than a proprietary or regional format.
The alternating use of DE3022 and DE3175 across non-consecutive years of the T100 means that year-specific verification is necessary before substituting one festoon bulb for the other.