American Motors Ambassador Clock Light Bulb Size

The American Motors Ambassador clock light requires bulb sizes 1816, 257, and 57 depending on the specific application for the interior component. Data for the lighting specifications covers the period from 1958 through 1974.

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 Size
1972-19741816
1970257
57
196957
1962-1968257
57
196157
1958-1959257
57

Bulb Specifications

Description Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T3.25). 12V, 4W.1816
ANSI standard (US & Canada). Festoon or BA9s base instrument bulb. 12V, 2W.257
ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 1W.57

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