Jeep J-3600 Dome Light Bulb Size

The Jeep J-3600 dome light requires a bulb size of 212-2 for proper installation and function within the interior cabin. Available data for the specified vehicle covers the range from 1965 through 1968.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
1965-1968	212-2

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	212-2

Other Locations

Additional Notes

The Jeep J-3600 uses the 212-2 bulb for the dome light across the 1965-1968 model years.
The 212-2 is an ANSI-standardized bulb, meaning it conforms to a defined specification recognized in both the United States and Canada.
The 212-2 is a festoon-type bulb, which is a cylindrical form factor held in place by spring clips at each end rather than inserted into a socket.
The 212-2 has an SV8.5 base, a designation that refers to the contact caps at both ends of a festoon bulb, with 8.5 indicating the cap width in millimeters.
The 212-2 has a length of 41mm, which is a critical fitment factor since festoon bulbs must physically span the distance between their mounting clips.
The bulb operates at 12 volts and draws 12 watts, consistent with standard 12V automotive electrical systems.
When substituting the 212-2, the festoon format, 41mm length, SV8.5 base, 12V rating, and 12W rating all represent fitment and compatibility factors that a replacement bulb would need to match.