Dodge Power Wagon Dome Light Bulb Size

The Dodge Power Wagon dome light requires a bulb size of 1004 for the interior lighting system. Data for the specific bulb requirements covers the range of 1956 through 1957.

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
1956-1957	1004

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	1004

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Additional Notes

The 1004 is the dome light bulb size for the Dodge Power Wagon across the 1956-1957 model years.
The 1004 bulb follows the ANSI standard, meaning it conforms to specifications recognized across the United States and Canada.
The 1004 is a dual-filament bulb, meaning it contains two separate filaments within a single envelope, each serving a distinct function at different wattages.
The 1004 operates on a 12-volt electrical system and carries a 21/5-watt rating, with the higher wattage corresponding to the primary filament and the lower to the secondary.
The 1004 uses a BAY15d bayonet base, a two-pin offset base type that physically locks the bulb into its socket through a twist-and-lock motion.
The 1004 is noted as a variant of the 1157 bulb, indicating a close relationship in design and base type, though the two are not necessarily interchangeable without confirming voltage and wattage compatibility with the specific socket.