A: Disconnect the cable from the negative terminal of the battery. Remove the instrument panel center trim panel on the Standard Dash or Premium Dash to access the A/C switch mounting bolts. Remove the mounting bolts from the A/C switch assembly. Pull the unit from the dash. It can be pulled out just far enough to allow the disconnection of the electrical connectors. Use a small screwdriver to release the clips. Installation is the reverse of removal. For the rear auxiliary heater control removal, pry out the trim panel from the back of the console, then disconnect the electrical connectors and remove the control mounting screws. Installation is the reverse of removal.