An assembly for installation of a switch in the dashboard of a vehicle without the use of any tools. The assembly comprises a housing, a resilient member such as a washer spring, and a bezel. The switch is secured to the housing and subsequently inserted into the bezel which is integrated with the dashboard. The installation of the switch, which is secured to the housing is then completed through the interaction of a profiled wall on the bezel and a flange on the housing with the washer spring interposed between.