American Motors Ambassador front side marker bulbs utilize 194, 97, or 67 bulb sizes, while rear side marker bulbs require the 194 size. The replacement chart covers 1968 through 1974 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The American Motors Ambassador uses three distinct bulb types across its front side marker positions for the 1968-1974 model years: the 194, the 97, and the 67.
The 194 is a T10 miniature wedge bulb rated at 12V and 3.78W, operating under the ANSI standard applicable in both the US and Canada.
The 97 is a single-filament bulb with a BA15s bayonet base, rated at 12V and 13W, and is classified as a variant of the 1156 under the same ANSI standard.
The 67 shares the BA15s bayonet base of the 97 but draws only 8W, making it a lower-wattage variant of the 1156 family.
The rear side marker position on the American Motors Ambassador uses the 194 bulb uniformly across all model years from 1968-1974.
The front side marker position uses the 194 for most years but departs from this in 1971 and 1973, where the 67 and 97 are specified respectively.
The 97 and 67 bulbs share the same BA15s bayonet base type, but their wattage ratings differ significantly at 13W and 8W, meaning they are not electrically interchangeable despite the physical base compatibility.
The 194 wedge base and the BA15s bayonet base are mechanically incompatible socket types, so the 194 cannot be substituted into positions specified for the 97 or 67 without a socket adapter.