Plymouth Road Runner Clock Light Bulb Size
The Plymouth Road Runner clock light requires bulb size 57 or 158 or 257 depending on the specific application. Data for the bulb sizes covers the range from 1968 to 1975.
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 |
|---|---|
| 1975 | 158 |
| 1970 | 257 |
| 57 | |
| 1969 | 57 |
| 1968 | 257 |
| 57 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| 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 |