Mercury Commuter Map Light Bulb Size

The Mercury Commuter map light utilizes 1816, 631, and 1895 bulb sizes for the interior lighting system. Data for the specific components covers the period from 1962 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

YearsBulb TypeShop
19681816Check Price
1967631Check Price
19661816Check Price
1962-19651895Check Price

Bulb Specifications

Description Type Shop
ANSI standard (US & Canada). Miniature wedge bulb (T3.25). 12V, 4W.1816Check Price
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 21W.631Check Price
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 0.9W.1895Check Price

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