Subaru Justy Map Light Bulb Size

The Subaru Justy map light utilizes a 168 bulb size for illumination within the interior cabin area. Data for the specified component covers the range from 1989 through 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

Years	Bulb Size
1989-1994	168

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

Other Locations

Additional Notes

The Subaru Justy uses the 168 bulb for the map light across all listed model years, spanning 1989-1994.
The 168 is an ANSI-standardized bulb type, meaning its specifications are governed by a recognized North American industry standard applicable in both the US and Canada.
The 168 bulb follows the T10 form factor, which refers to a miniature wedge-base design. The wedge base replaces a traditional metal contact with a pinched glass end that seats directly into the socket.
The 168 operates at 12 volts, consistent with the standard electrical system voltage found in conventional passenger vehicles.
The 168 carries a rated wattage of 4.9W, placing it in the low-power range typical of interior courtesy and reading lamps.
Because the 168 is a wedge-base bulb, it is not interchangeable with bayonet-base or screw-base miniature bulbs, even when voltage and wattage ratings are similar.