Chevrolet Equinox Courtesy Bulb Size

Additional Notes

• The Chevrolet Equinox courtesy bulb specifications across 2005-2017 reference three distinct bulb types: 12961, 194, and 562, each with different base designs and wattage ratings.
• The 562 is a festoon-type bulb with end-cap contacts and a 44mm length, rated at 12V and 12W. It follows the ANSI standard applicable in the US and Canada.
• The 194 is a T10 miniature wedge bulb rated at 12V and 3.78W, also conforming to the ANSI standard for the US and Canadian markets.
• The 12961 is a Philips part number designation for a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W.
• Although the 194 and 12961 share the T10 form factor, their wattage ratings differ: the 194 draws 3.78W while the 12961 draws 5W. The 12961 also carries a manufacturer-specific part number rather than an ANSI designation, which is relevant to fitment decisions.
• The 562 festoon bulb, used in the Chevrolet Equinox (2005-2009) for courtesy lighting, operates at a notably higher wattage of 12W compared to the wedge-type bulbs used in later model years.
• For the 2009 Equinox, the 562 bulb is specified specifically for the Rear Center courtesy position, indicating that multiple bulb types or positions may exist within a single model year.
• The 12961 bulb is specified for the 2017 Equinox in the Trunk Light and Stepwell Light positions, indicating that a single bulb size serves more than one courtesy lighting location in that model year.
• The W2.1x9.5d base designation on the 12961 refers to a wedge base with a 2.1mm wire width and 9.5mm pin spacing, which is a standard metric used to define physical compatibility in miniature wedge bulbs.
• The 2016 Equinox uses the 194 bulb, while the adjacent 2015 and 2017 model years use the 12961, reflecting a non-uniform pattern of bulb assignments across the model's production span.