Abstract: A grommet assembly for use in providing a weatherproof conduit for electrical and/or pneumatic lines between, for example, an automotive body structure and the interior of a door hingedly mounted on the vehicle body structure. The grommet is made of a soft material and is provided with opposed open ends, each of which receives a retainer made of a harder plastic material. At least one end of the grommet is provided with a retainer groove and opposed pairs of receptacles which create raised details on the outside surface of the grommet end structure. The retainer is provided with arrowhead-shaped protrusions which, when the retainer is properly disposed within the end structure of the grommet body, fit into and enlarge the receptacles to provide both visual and tactile indications that the grommet retainer is properly installed.