BMW 1600 Dome Light Bulb Size

The BMW 1600 dome light requires a unique bulb size of 97 for the interior lighting system. Data for the specified lighting component covers the range from 1969 to 1971.

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
1969-1971	97

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 13W.	97

Other Locations

Additional Notes

The BMW 1600 uses the 97 bulb for the dome light across the 1969-1971 model years.
The 97 is an ANSI-standardized bulb type recognized in both the United States and Canada.
It operates on a 12-volt electrical system and draws 13 watts, placing it in the low-wattage range typical of interior lighting applications.
The 97 bulb uses a BA15s bayonet base, which is a single-contact bayonet mount with a 15mm collar.
As a single-filament bulb, the 97 serves functions that require only one lighting mode, such as constant-on interior illumination.
The 97 is noted as a variant of the 1156 bulb. While both share the BA15s base, they differ in wattage, and substitution between them is not confirmed as interchangeable by these specifications.