An electronic module includes a printed circuit board with a heat producing electrical component assembled in an insulating housing. The component is adjacent a thermally conducting heat sink with a thermally conductive material disposed therebetween. Integral with the heat sink is a thermally conductive runner, partially encased in the housing wall, connecting the heat sink to a thermally conductive port. The port is coupled to a base structure when the housing is attached to the base, forming a heat conduction path from the component to the base. This conductive path may also provide an electrical ground path from the printed circuit board to the base.