Plymouth Road Runner Engine Compartment Light Bulb Size

The Plymouth Road Runner engine compartment light uses bulb sizes 1003 and 1004 for the specific lighting components located within the motor area. Data for the bulb sizes covers the span from 1968 through 1975 without any missing information for the period.

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 TypeShop
19751003Check Price
1972-19741004Check Price
1968-19701004Check Price

Bulb Specifications

Description Type Shop
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.1003Check Price
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.1004Check Price

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