Hino SG3320 Back Up Light Bulb Size

The Hino SG3320 back up light requires a bulb with the unique 1156 size specification for proper installation. Available data covers the specific range from 1993 through 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	1156

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156

Other Locations

Additional Notes

The 1156 is the sole bulb type listed for the Hino SG3320 back up light across the 1993-1995 model years.
The 1156 is an ANSI-standardized bulb recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical parameters shared across those markets.
It operates on a 12-volt circuit and draws 21 watts, which is typical of incandescent single-filament automotive bulbs used in back up light applications.
The 1156 uses a BA15s bayonet base, where "BA15s" denotes a bayonet fitting with a 15mm collar and a single contact pin, distinguishing it from double-contact variants such as the BA15d.
Because the 1156 is a single-filament bulb, it serves one dedicated lighting function per socket, as opposed to dual-filament types that can serve two functions from a single housing.
The BA15s base type is a widely produced standard, meaning the 1156 is physically interchangeable with other bulbs sharing that base only when voltage, wattage, and application requirements also match.