Plymouth Arrow Dome Light Bulb Size

The Plymouth Arrow dome light requires a DE3175 bulb size for proper illumination within the interior cabin area. Data for the specified lighting component covers the period from 1976 through 1980.

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
1976-1980	DE3175

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175

Other Locations

Additional Notes

The Plymouth Arrow uses the DE3175 bulb for the dome light across all listed model years, spanning 1976-1980.
The DE3175 is a festoon-type bulb, meaning it is cylindrical in shape and seats by pressing lengthwise between two spring-loaded end contacts rather than inserting into a socket.
The 31mm figure in the DE3175 designation refers to the length of the bulb, which is the critical fitment factor for festoon bulbs since the end-cap contacts must span the fixture correctly.
The DE3175 operates at 12 volts, consistent with standard automotive electrical systems of that era.
The DE3175 carries ANSI standardization recognized in both the United States and Canada, meaning the designation refers to a consistent specification rather than a proprietary part number.
Because festoon bulbs rely on physical length for proper contact, substituting a festoon bulb of a different length, such as a 36mm or 28mm variant, would result in a poor or failed connection even if the voltage rating matched.