Triumph TR7 Parking Light Bulb Size

The Triumph TR7 parking light utilizes a single bulb size identified as 1895 for the lighting system. Data for the specified component covers the range from 1975 to 1981.

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
1975-1981	1895

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 0.9W.	1895

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Additional Notes

The 1895 is the specified parking light bulb for the Triumph TR7 across all listed model years, 1975-1981.
The 1895 bulb follows the ANSI standard, which is the recognized classification system for miniature automotive bulbs in the United States and Canada.
It is a T5 miniature wedge type, meaning it uses a wedge-shaped base rather than a bayonet or screw fitting, and seats directly into a compatible socket without a separate metal base.
The bulb operates at 12 volts, consistent with the standard electrical system voltage found in passenger vehicles of this era.
At 0.9 watts, the 1895 draws very low current, which is characteristic of parking and marker light applications where continuous low-intensity illumination is required rather than high output.
Because the 1895 uses a wedge base, substitution with bayonet-base bulbs of similar wattage is not physically compatible, as the socket type determines fitment regardless of voltage or wattage ratings.