To work on the sun visor, remove the screws that secure the Sun visor arm support bracket to the headliner and roof panel. When the vehicle has a vanity mirror, make sure the electrical connections are disconnected. After that, pull off the support bracket and the Sun visor from your vehicle and then pull out the support bracket's screw. To set up the Sun visor, first add the retaining screw and support bracket, after which you can add the Sun visor into your car. If the mirror requires a harness, connect it now before clipping the Sun visor onto the support bracket. After that, attach the support bracket with the Sun visor to the headliner and roof panel.