Chrysler 200 Map Light Bulb Size

Additional Notes

• The Chrysler 200 map light draws from two distinct bulb types across its model years, with the 2011-2014 models using the 212-2 and the 2015-2017 models using the 12961.
• The 12961 is a Philips-designated miniature wedge bulb in the T10 form factor, rated at 12 volts and 5 watts, and seated in a W2.1x9.5d base.
• The 212-2 follows the ANSI standard recognized in the United States and Canada, taking the form of a festoon bulb with a 41mm length and an SV8.5 base, rated at 12 volts and 12 watts.
• The wattage difference between the two bulb types is notable: the 212-2 draws 12 watts while the 12961 draws 5 watts, meaning the two are not electrically interchangeable despite both operating at 12 volts.
• The wedge base of the 12961 (W2.1x9.5d) and the festoon SV8.5 base of the 212-2 are physically incompatible mounting types, which further prevents cross-year substitution.
• The T10 designation of the 12961 refers to a tubular bulb approximately 10/32 of an inch wide, a common miniature format used in low-current interior lighting applications.
• The SV8.5 base on the 212-2 is a festoon-style contact base where the bulb is held in place by spring-loaded end caps rather than a socket, a standard fitment method for dome and map light housings of that era.
• The Chrysler 200 (2011-2014) requires the 212-2 for its map light, and substituting a T10 wedge bulb from the later generation would be physically incompatible with the festoon-style housing.