The Oldsmobile Regency uses 194 bulb size for both front and rear side marker applications. The replacement chart covers 1997 to 1998 model years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 194 bulb is the sole bulb type listed across all side marker positions for the Oldsmobile Regency, covering both the 1997-1998 model years.
The 194 bulb follows the ANSI standard recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical specifications shared across North American markets.
It is classified as a miniature wedge bulb in the T10 form factor. The T10 designation refers to a tubular bulb with a width of 10 millimeters, fitted with a wedge-style base that requires no separate socket locking mechanism.
The 194 operates at 12 volts, which is consistent with the standard electrical system voltage found in conventional passenger vehicles.
Its rated wattage of 3.78W places it in the low-power range, typical of side marker applications where continuous illumination is required without significant draw on the vehicle's electrical system.
The same 194 bulb size is specified for both the front and rear side marker positions on the 1997-1998 Regency, indicating that a single bulb type serves all four side marker sockets on the vehicle.
The T10 wedge base format is widely used across many vehicle makes and models, though fitment confirmation against the specific vehicle application remains necessary before substitution, as socket depth and housing clearance can vary.