Chevrolet Nomad front and rear turn signal bulbs both utilize a 1034 size bulb for proper operation. The replacement chart covers 1955 through 1961 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Chevrolet Nomad uses the 1034 bulb for both front and rear turn signals across all model years from 1955 to 1961.
The 1034 is an ANSI-standardized bulb type, meaning its specifications are governed by a recognized North American standard applicable in both the United States and Canada.
The 1034 is a dual-filament bulb, which means it contains two separate filaments within a single envelope, allowing it to serve more than one lighting function simultaneously.
It operates on a 12-volt electrical system and carries a 21/5-watt rating, where the higher wattage filament corresponds to the brighter turn signal or stop function and the lower wattage filament serves a secondary purpose such as a parking or tail light.
The 1034 uses a BAY15d bayonet base, a two-pin base type with offset pins that prevent incorrect insertion, ensuring consistent polarity alignment during installation.
The 1034 is described as a variant of the 1157, a widely used automotive bulb. While the two share the BAY15d base and dual-filament design, they are not identical, and substituting one for the other without confirming electrical compatibility may affect circuit performance.