Abstract: An optical waveguide assembly for distributing light within a vehicle door panel includes a light source that outputs light to an optical waveguide. A trunk waveguide that propagates light through internal reflection has output branches and a trunk input portion connected to the light source. Branch waveguides that propagate light through internal reflection extend from the output branches of the trunk waveguide to lighting outputs of the vehicle door panel. Support arms extend between the branch waveguides and support the branch waveguides within the vehicle door panel.