Polaris Lite Brake Bulb Size

The Polaris Lite brake utilizes 921 and 90 bulb sizes for the lighting system. Data for the specific components covers the period from 1991 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
1993-1998	921
1991-1992	90

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 13W.	90

Other Locations

Additional Notes

The Polaris Lite uses two distinct brake bulb types across its production years: the 921 and the 90, both conforming to ANSI standards recognized in the United States and Canada.
The 921 is a T15 wedge-base bulb rated at 12V and 16W. Its wedge base design means it is held in place by friction rather than a locking mechanism, requiring no rotation during installation or removal.
The 90 is a single-filament bulb with a BA15s bayonet base, rated at 12V and 13W. The BA15s designation indicates a single-contact bayonet fitting with a 15mm base width, which is not interchangeable with wedge-socket housings.
The Polaris Lite (1993-1998) uses the 921 bulb for the brake light position, while the 1991-1992 model years use the 90 bulb instead.
The 921 and 90 bulbs operate on the same 12V electrical system but differ in wattage, with the 921 drawing 16W and the 90 drawing 13W. This difference reflects their distinct base types and socket housings, making them non-interchangeable.
The base type difference between the T15 wedge socket and the BA15s bayonet socket means that substituting one bulb for the other is not physically possible without modifying the socket housing.