Chevrolet Camaro Turn Signal Indicator Bulb Size

Additional Notes

• The Chevrolet Camaro turn signal indicator bulb specifications span model years 1967 through 2002, covering four distinct bulb sizes across that range: the 194, 161, 168, 158, 74, and 1895.
• The 194 bulb is the most frequently specified across the Camaro's history, covering model years 1968-1978 and 1980-1989. It is an ANSI-standard T10 miniature wedge bulb rated at 12V and 3.78W.
• The 161 bulb is the second most common fitment, used across model years 1993-2002. It is also a T10 miniature wedge bulb but operates at a significantly lower wattage of 1W at 12V, compared to the 194's 3.78W.
• Although the 161 and 194 bulbs share the same T10 wedge base form factor, their wattage ratings differ considerably. Substituting one for the other may affect indicator brightness or circuit compatibility.
• The 158 bulb, specified for the 1990 Camaro, is a T10 miniature wedge bulb rated at 12V and 3W, placing its output between the lower-wattage 161 and the higher-wattage 194.
• The 168 bulb, specified solely for the 1979 Camaro, carries the highest wattage among all listed T10 wedge bulbs at 4.9W. Despite sharing the T10 base with the 158, 161, and 194, its higher power draw distinguishes it from those fitments.
• The 74 bulb, used in the 1991-1992 Camaro, is a T5 miniature wedge bulb rated at 12V and 1.4W. The T5 base is physically smaller than the T10 base, making it incompatible with sockets designed for T10 bulbs.
• The 1895 bulb, specified for the 1967 Camaro, is also a T5 miniature wedge bulb, rated at 12V and 0.9W. It shares the same base type as the 74 but operates at a lower wattage.
• The shift from T5 fitments in 1991-1992 back to a T10 fitment starting in 1993 reflects a socket-level change, meaning bulbs from those T5 years are not interchangeable with the T10-based 161 used in later model years.
• All bulb types listed across the Camaro's turn signal indicator specifications conform to ANSI standards applicable in both the United States and Canada, and all operate on a 12V electrical system.