Volvo 760 License Plate Bulb Size

The Volvo 760 license plate light uses bulb sizes 3893 and DE3423 according to the provided specifications. Data for the lighting components covers the range from 1983 to 1990.

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
1985-1990	3893
1983-1984	DE3423

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, specialty application. 12V.	3893
ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V.	DE3423

Other Locations

Additional Notes

The Volvo 760 uses two distinct bulb types across its model years for the license plate position: the 3893 and the DE3423.
The 3893 bulb is an ANSI-standard type recognized in both the United States and Canada, operating at 12 volts with a BAY15d bayonet base and a dual-filament construction.
A BAY15d bayonet base features two pins offset at different heights, which physically prevents incorrect single-filament bulbs from being seated in the socket.
The DE3423 is also an ANSI-standard bulb recognized in the United States and Canada, operating at 12 volts as a festoon type with a 41mm length and end-cap contacts.
Festoon bulbs make electrical contact through metal caps at each end rather than through a base, requiring the correct length for a secure fit within the housing.
The Volvo 760 (1985-1990) uses the 3893 bulb for the license plate position.
The 1983-1984 model years use the DE3423 festoon bulb instead, representing a different socket type than the one found in later production years.
Because the 3893 uses a bayonet base and the DE3423 uses end-cap contacts, the two bulb types are not interchangeable with each other regardless of voltage compatibility.