Jeep Wagoneer Dome Light Bulb Size

Additional Notes

• The Jeep Wagoneer used the 212-2 bulb as its dome light specification across the 1963-1968 model years.
• The 212-2 is an ANSI-standardized bulb, meaning its physical and electrical specifications are governed by a recognized North American standard applicable in both the United States and Canada.
• The 212-2 is a festoon-type bulb, which is a cylindrical lamp that mounts by pressing its two end caps into spring clips rather than inserting into a socket.
• The festoon body of the 212-2 measures 41mm in length, which determines compatibility with the spring-clip housing in the Wagoneer's dome light fixture.
• The 212-2 uses an SV8.5 base, a designation that refers to the 8.5mm cap width on each end of the festoon body.
• The bulb operates at 12 volts, consistent with the 12-volt electrical systems standard in automotive applications of that era.
• The 212-2 carries a 12-watt power rating, which reflects the amount of electrical power the bulb draws during operation.
• Because the 212-2 is defined by both its 41mm festoon length and its SV8.5 cap width, a replacement bulb must match both of those physical attributes to seat correctly in the Wagoneer's dome light housing.