Chevrolet Camaro High Beam Indicator Bulb Size

Additional Notes

• The Chevrolet Camaro high beam indicator uses four distinct bulb sizes across its model history: 161, 74, 158, 194, and 1895, all of which conform to ANSI standards for the US and Canadian markets.
• The 161 bulb is the most frequently specified size in the Camaro's high beam indicator fitment, covering the 1983-1989 and 1993-2002 model years. It is a T10 miniature wedge bulb rated at 12V and 1W.
• The 194 bulb is the second most common fitment, used across the 1969-1970 and 1972-1982 model years. It shares the T10 wedge form factor with the 161 but operates at a higher wattage of 3.78W.
• Although the 161 and 194 bulbs share the same T10 wedge form factor, their wattage ratings differ significantly, at 1W and 3.78W respectively, which means they are not interchangeable without accounting for that electrical difference.
• The 158 bulb, specified for the 1990 Chevrolet Camaro, is also a T10 miniature wedge type rated at 12V and 3W, placing its power output between the 194 and 161 in terms of wattage.
• The 74 and 1895 bulbs are both T5 miniature wedge types, but they carry different wattage ratings. The 74 is rated at 1.4W while the 1895 is rated at 0.9W, making them electrically distinct despite sharing the same physical form factor.
• The 74 bulb applies to the 1991-1992 Camaro, and the 1895 bulb applies solely to the 1971 model, representing the two years in which a T5 form factor was specified rather than a T10.
• The T5 and T10 designations refer to the bulb's tubular body width, measured in units of one-eighth of an inch, meaning a T5 is 5/8 inch wide and a T10 is 10/8 inch wide. This physical difference makes T5 and T10 bulbs incompatible with each other's sockets.
• All five bulb types in these specifications operate at 12V, consistent with standard automotive electrical systems, though their wattage outputs range from 0.9W for the 1895 up to 3.78W for the 194.
• The 1971 Camaro stands as the only model year in the specifications to use the 1895 bulb, which at 0.9W carries the lowest wattage rating of any bulb listed across the entire model range.