American Motors Ambassador Courtesy Bulb Size
The American Motors Ambassador courtesy light utilizes 561, 158, 89, and 1004 bulb sizes depending on the specific version of the vehicle. Data for the bulb sizes covers the range from 1960 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
| Years | Bulb Size |
|---|---|
| 1972-1974 | 561 |
| 1971 | 158 |
| 1968-1970 | 561 |
| 1965-1967 | 89 |
| 1960-1964 | 1004 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W. | 561 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W. | 158 |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W. | 89 |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W. | 1004 |