Mercury Topaz Turn Signal Indicator Bulb Size

The Mercury Topaz turn signal indicator utilizes a 194 bulb size for illumination within the instrument cluster. Provided information covers a span of time starting in 1984 and ending in 1994.

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

YearsUS TypeEU TypeShop
1984-1994194W5WCheck Price

Bulb Specifications

Description Type Shop
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.194Check Price
ECE standard (Europe & worldwide). Single-filament signalling bulb with W2.1x9.5d wedge base. 12V, 5W.W5WCheck Price

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