Mercury Colony Park Map Light Bulb Size

The Mercury Colony Park map light utilizes bulb sizes 561, 105, 912, 214-2, 212-2, 1816, 631, and 1895. Available data covers the range from 1962 through 1991.

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
1991	561
1988-1990	105
1987	912
1974	214-2
1972-1973	212-2
1968-1971	1816
1967	631
1966	1816
1962-1965	1895

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	561
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 13W.	105
ANSI standard (US & Canada). Wedge bulb (T15). Variant of 921. 12V, 12W.	912
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	214-2
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	212-2
ANSI standard (US & Canada). Miniature wedge bulb (T3.25). 12V, 4W.	1816
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 21W.	631
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 0.9W.	1895

Other Locations

Additional Notes

The Mercury Colony Park map light specifications span model years 1962 through 1991, with nine distinct bulb sizes used across that period.
The 1816 bulb is the most frequently specified size, covering the Mercury Colony Park for 1966-1970 and 1968-1970, appearing across six model years in total. It is a miniature wedge bulb in the T3.25 form factor, rated at 12V and 4W.
The 1895 bulb, a miniature wedge type in the T5 form factor rated at 12V and 0.9W, is specified for the Colony Park across four model years from 1962-1965. At 0.9W, it draws notably less power than any other bulb size listed in these specifications.
The 105 bulb, specified for 1988-1990, uses a BA15s single-contact bayonet base and is rated at 12V and 13W. It is a variant of the widely available 1156 bulb type, though the two are not interchangeable without verification of exact fitment.
Two festoon bulb sizes appear in the specifications: the 214-2 for 1974 and the 212-2 for 1972-1973. Both share the same SV8.5 base and 41mm length, and both are rated at 12V and 12W, yet they carry different ANSI designations and are not listed as interchangeable.
The 561 bulb, specified for the 1991 Colony Park, is also a festoon type but uses end-cap contacts rather than an SV8.5 base, and measures 44mm in length. This distinguishes it physically from the 214-2 and 212-2 festoon bulbs used in earlier model years.
The 631 bulb, specified for 1967, shares the BA15s bayonet base with the 105 bulb used in 1988-1990, but is rated at 21W compared to the 105's 13W. Both are variants of the 1156 type, and the wattage difference means they are not drop-in replacements for one another.
The 912 bulb, specified for the 1987 Colony Park, is a T15 wedge type rated at 12V and 12W. It is a variant of the 921 bulb, and while the two are often treated as interchangeable in general automotive contexts, fitment should be confirmed against the specific socket and housing.
Across the full range of specifications, operating voltage is consistently 12V for all listed bulb sizes, reflecting the standard 12-volt electrical system common to passenger vehicles of these model years.
Wattage varies considerably across the listed bulb sizes, ranging from 0.9W for the 1895 to 21W for the 631. This range reflects the differing lighting technologies and design standards applied to map light functions across the nearly three decades covered by these specifications.