Mobility Ventures MV-1 Dome Light Bulb Size

The Mobility Ventures MV-1 dome light requires a 1003 bulb size for proper installation and function within the interior cabin. Data for the specified lighting component covers the range from 2014 to 2017.

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
2014-2017	1003

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1003

Other Locations

Additional Notes

The Mobility Ventures MV-1 uses the 1003 bulb for the dome light across the 2014-2017 model years.
The 1003 is an ANSI-standardized bulb type, meaning its physical and electrical specifications are defined by a recognized North American standard applicable in both the United States and Canada.
This bulb operates on a 12-volt electrical system, which is consistent with standard automotive DC voltage.
At 21 watts, the 1003 produces a relatively moderate output for an incandescent dome light bulb.
The 1003 uses a BA15s bayonet base, which is a single-contact bayonet fitting. The "s" designation indicates a single contact point at the base, as opposed to the dual-contact BA15d variant.
Because the BA15s and BA15d bases are physically similar but electrically different, substituting a BA15d bulb in place of the BA15s 1003 would result in an improper fit and incorrect electrical contact.
The single-filament construction of the 1003 means it serves one lighting function only, with no secondary filament for a reduced-brightness mode.