Mercury Colony Park License Plate Bulb Size

The Mercury Colony Park license plate light uses bulb sizes 168, 90, 631, 97, 1155, and 67 depending on the specific version of the vehicle. Available data covers the range from 1957 to 1991 for the components listed in the provided chart.

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
1987-1991	168
1973-1974	90
1972	631
1968-1971	97
1963-1967	1155
1957-1962	67

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 13W.	90
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 21W.	631
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 13W.	97
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 21W.	1155
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 8W.	67

Other Locations

Additional Notes

The Mercury Colony Park license plate bulb specifications span model years 1957 through 1991, covering six distinct bulb types across that period.
The 168 bulb is the only miniature wedge type (T10) in these specifications, operating at 12V and 4.9W. It is the designated license plate bulb for the Colony Park from 1987-1991.
The T10 wedge base of the 168 bulb is not interchangeable with the BA15s bayonet base used by all other bulb types listed in these specifications, as the two base designs are physically incompatible.
Five of the six bulb types in these specifications use the BA15s single-contact bayonet base: the 90, 631, 97, 1155, and 67.
The 631 and 1155 are both described as variants of the 1156 and share identical electrical ratings of 12V and 21W, making them the highest-wattage bulbs in these specifications.
The 97 and 90 share the same voltage and wattage ratings (12V, 13W) and both use the BA15s bayonet base, though they are listed as separate ANSI bulb types.
The 67 bulb, used on the Colony Park from 1957-1962, is the lowest-wattage BA15s bayonet bulb in these specifications at 8W, and is described as a lower wattage variant of the 1156.
Although the 631 and 1155 share the same voltage and wattage ratings, they are distinct ANSI part numbers and are not confirmed as interchangeable within these specifications.
The 1155 bulb served the Colony Park across a five-year span from 1963-1967, making it the longest-running single bulb type in these specifications.
The 1972 Colony Park uses the 631 bulb, which at 21W draws notably more power than the 97 bulb used in the immediately preceding model years 1968-1971.