A pass-through vacuum includes a mixing tube and separate and removable housing extending along a mutual central longitudinal axis. The grommet is installable in an associated fastener opening of a license plate to capture the grommet within the fastener hole and in turn to capture the fasteners within the grommet, while enabling the fasteners to be turned relative to the grommets and license plate for releasably mounting the plate on the vehicle. An electronic component is placed on an adhesive layer provided on the first insulation layer at a position determined based on the alignment mark.