Polaris 400 Tail Light Bulb Size

The Polaris 400 tail light utilizes a 194 bulb size for the lighting system on the vehicle. Data for the specific component covers the range from 1985 through 1991.

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
1985-1991	194

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

Other Locations

Additional Notes

The 194 bulb is the sole tail light bulb type listed for the Polaris 400 across the 1985-1991 model years.
The 194 is classified as a miniature wedge bulb, designated T10 in the international bulb sizing system. The T10 designation refers to the bulb's tubular shape, with the number indicating a width of 10 eighths of an inch.
The 194 operates at 12 volts with a power draw of 3.78 watts, placing it in the low-wattage range typical of indicator and auxiliary lighting applications.
The 194 carries ANSI standardization recognized in both the United States and Canada, meaning the specification conforms to a defined set of electrical and physical parameters rather than a proprietary design.
The wedge base of the T10 form factor is retained by friction rather than a bayonet or screw mechanism, which is a relevant consideration during bulb replacement.
Because the 194 is an ANSI-standardized type, equivalent bulbs from different manufacturers sharing the same designation are generally interchangeable, provided the 12V and 3.78W ratings are matched.