Chevrolet Classic Map Light Bulb Size

Additional Notes

• The 212-2 is the map light bulb type specified for the Chevrolet Classic across the 2004-2005 model years.
• The 212-2 follows the ANSI standard, which is the American National Standards Institute classification system used in the United States and Canada to define bulb specifications uniformly.
• This bulb is a festoon type, meaning it is cylindrical in form and mounts by pressing horizontally between two spring clips at each end rather than inserting into a socket.
• The 212-2 has a length of 41mm, which is a critical fitment factor, as festoon bulbs must match the span between the fixture's contact clips.
• The base designation is SV8.5, referring to a festoon base with an 8.5mm contact cap width at each end.
• The 212-2 operates at 12 volts and consumes 12 watts, both values consistent with standard 12-volt automotive electrical systems.
• Because festoon bulbs are sized by physical length and base width, substituting a 212-2 with a festoon bulb of a different length or base size would result in an incompatible fit even if the voltage rating matches.