Isuzu Impulse Turn Signal Indicator Bulb Size
The Isuzu Impulse turn signal indicator uses bulb sizes 74 and 158 depending on the specific version of the vehicle. Data for the bulb sizes covers the range from 1983 to 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
| Years | Bulb Size |
|---|---|
| 1988-1992 | 74 |
| 1983-1987 | 158 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 1.4W. | 74 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W. | 158 |