Pontiac Bonneville Automatic Transmission Indicator Bulb Size
The Pontiac Bonneville automatic transmission indicator utilizes bulb sizes 74, 168, 194, 1895, 57, and 257 depending on the specific version. Available information covers the span from 1958 through 1992.
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
If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.
| Years | US Type | EU Type | Shop |
|---|---|---|---|
| 1992 | 74 | W1.2W | Check Price |
| 1991 | 168 | W5W | Check Price |
| 1988 | 168 | W5W | Check Price |
| 1981-1986 | 194 | W5W | Check Price |
| 1964-1971 | 1895 | 1895 | Check Price |
| 1961-1963 | 57 | 57 | Check Price |
| 1958-1960 | 257 | 257 | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 1.4W. | 74 | Check Price |
| ECE standard (Europe & worldwide). Miniature wedge bulb (T5) with W2x4.6d base. 12V, 1.2W. | W1.2W | Check Price |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W. | 168 | Check Price |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with W2.1x9.5d wedge base. 12V, 5W. | W5W | Check Price |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 | Check Price |
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 0.9W. | 1895 | Check Price |
| ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 1W. | 57 | Check Price |
| ANSI standard (US & Canada). Festoon or BA9s base instrument bulb. 12V, 2W. | 257 | Check Price |