American Motors Ambassador Turn Signal Indicator Bulb Size
The American Motors Ambassador turn signal indicator utilizes bulb sizes 57, 158, 194, 257, and 1816 depending on the specific version of the vehicle. Available data covers the range from 1958 through 1974 for the components listed.
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 |
|---|---|
| 1972-1974 | 194 |
| 1971 | 1816 |
| 1965-1970 | 158 |
| 1964 | 257 |
| 1963 | 57 |
| 1960-1962 | 257 |
| 1959 | 57 |
| 1958 | 257 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 |
| ANSI standard (US & Canada). Miniature wedge bulb (T3.25). 12V, 4W. | 1816 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W. | 158 |
| 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 |