A: To remove the A/C switch, start by disconnecting the cable from the negative terminal of the battery. Then, use a flat-bladed plastic trim tool to remove the center trim panel from the instrument panel. Next, remove the A/C switch retaining screws and pull the unit from the dash. You can pull it out just enough to disconnect the electrical connections and control cables from the A/C switch, using a small screwdriver to release the clips. To install the A/C switch, simply reverse the removal procedure.