Toyota Pickup Courtesy Bulb Size

The Toyota Pickup courtesy light utilizes bulb size 6428 and DE3021 along with DE3175 or DE3022 depending on the specific application. Data for the light covers the range from 1986 to 1995.

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
1993-1995	DE3022
1991-1992	DE3175
1989-1990	DE3022
1987	DE3021
1986	6428

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3022
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3021
ANSI standard (US & Canada). Festoon bulb, 36mm length, SV8.5 base. 12V, 5W.	6428

Other Locations

Additional Notes

The Toyota Pickup uses festoon-style courtesy bulbs across all listed model years, a bulb format characterized by a cylindrical body held in place by spring-loaded contacts at each end of the housing.
Three of the four bulb types found in these specifications, the DE3022, DE3175, and DE3021, share a 31mm length and end-cap contact design, operating at 12V under the ANSI standard applicable in the US and Canada.
The 6428 bulb, fitted to the 1986 Toyota Pickup, is 36mm in length and uses an SV8.5 base rather than end-cap contacts, with a rated output of 12V and 5W.
The DE3022 is the most frequently specified courtesy bulb across these model years, covering 1989-1990 and 1993-1995.
Despite sharing the same 31mm length and end-cap contact style, the DE3021, DE3022, and DE3175 carry distinct part numbers, which indicates differences in electrical characteristics or filament ratings that affect direct interchangeability.
The 1991-1992 model years are specified with the DE3175, separating them from the DE3022 years immediately before and after, which reflects a fitment distinction that warrants attention when sourcing a replacement bulb for those years.
The 6428 bulb used in 1986 is not interchangeable with any other bulb in these specifications, as its 36mm length and SV8.5 base differ from the 31mm end-cap units used in all other listed years.