Plymouth GTX Courtesy Bulb Size
The Plymouth GTX courtesy light uses bulb size 158 and bulb size 90 for various interior lighting applications. Data for 158 and 90 covers the range from 1967 to 1971.
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 |
|---|---|
| 1971 | 158 |
| 1967-1970 | 90 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W. | 158 |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 13W. | 90 |