Dodge Sierra front and rear turn signal bulbs utilize 1034 and 1154 sizes. The replacement chart covers 1954 through 1959 production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Dodge Sierra uses two bulb types across its front and rear turn signal positions: the 1034 and the 1154, both of which are dual-filament bulbs sharing the BAY15d bayonet base.
The BAY15d base is an offset twin-contact bayonet fitting, which physically prevents incorrect single-filament bulbs from being seated in the socket.
Both the 1034 and 1154 are ANSI-standardized bulbs recognized in the United States and Canada, and both are variants of the 1157 bulb family.
The 1034 bulb operates at 12V with a 21/5W dual-filament output, where the higher wattage filament serves the turn signal function and the lower wattage filament serves a secondary purpose such as running light duty.
The 1154 is an older variant of the 1157 and is rated for either 6V or 12V operation, reflecting the transitional electrical system standards of mid-1950s vehicles.
On the Dodge Sierra, the 1034 bulb is specified for both front and rear turn signals across the 1956-1959 model years.
The 1154 bulb is specified for both front and rear turn signals on the 1954-1955 Dodge Sierra, corresponding to the period when 6-volt electrical systems were still in common use.
Although the 1034 and 1154 share the same BAY15d base, their voltage ratings differ, and substituting one for the other without confirming the vehicle's electrical system voltage would result in incorrect operation or premature bulb failure.