The Pontiac Firebird side marker utilizes a 194 bulb size for illumination purposes. Data for the specific component covers the range from 1995 through 1997.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Pontiac Firebird uses the 194 bulb as the dominant side marker type, with that designation covering both front and rear positions across the 1972-1997 model years.
The 194 is an ANSI-standard miniature wedge bulb in the T10 form factor, rated at 12V and 3.78W, and is used in both the United States and Canada.
The 1967-1970 Pontiac Firebird front side markers call for the 194NA, a natural amber glass variant of the T10 wedge bulb that shares the same 12V, 3.78W electrical rating as the standard 194.
Because the 194NA and 194 share identical electrical ratings and the same T10 wedge base, the physical socket is the same, but the amber tint is built into the glass of the 194NA rather than the lens housing.
The 1971 front side marker position is the sole application of the 67 bulb in these specifications. The 67 uses a BA15s single-contact bayonet base and is rated at 12V and 8W, making it electrically distinct from the T10 wedge types used in all other front marker years.
The 1971 rear side marker uses the 1157, a dual-filament bulb with a BAY15d bayonet base rated at 12V and 21W/5W. This is the only rear position in the specifications that does not use a T10 wedge bulb.
The BAY15d base of the 1157 and the BA15s base of the 67 are both bayonet-style fittings but are not interchangeable. The BAY15d has offset pins to accommodate its dual-filament design, while the BA15s has symmetrical pins for a single filament.
The 1157 rated at 21W/5W draws significantly more current than the 3.78W T10 wedge bulbs used in surrounding model years, which is a relevant consideration when evaluating socket and wiring compatibility for the 1971 rear marker position.
All four bulb types in these specifications conform to ANSI standards recognized in both the United States and Canada.
The rear side marker position returns to the standard 194 T10 wedge for the 1970 and 1967-1969 model years, meaning the 1971 rear application of the 1157 represents an isolated departure from the otherwise consistent rear marker fitment across the full specification range.