Mercury Custom Tail Light Bulb Size

The Mercury Custom tail light requires bulb sizes 1034 and 1154 for proper illumination across the various lighting assemblies. Data for the specific components covers the period from 1952 through 1956.

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

YearsBulb Size
19561034
1952-19551154

Bulb Specifications

Description Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.1034
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Older variant of 1157. 6V/12V.1154

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