For 1990-2009 cars

### Removal Procedure

1. Remove the ashtray from the guide by depressing the spring-loaded tab and pulling the ashtray out from the guide.
2. Remove the 4 knobs from the heater control unit.
3. Remove the heater control unit face plate (2) from the center trim bezel (3) by pulling the face plate (2) straight out.
4. Remove the illumination lamp bulb socket from the heater control unit.
5. Remove the 4 screws (1) and the center trim bezel (3) from the instrument panel.

### Installation Procedure

1. Install the center trim bezel (3) to the instrument panel. Secure the bezel with the 4 screws (1).
2. Install the heater control unit illumination bulb socket to the heater control unit face plate (2) by twisting the socket clockwise.
3. Install the heater control unit face plate (2) to the instrument panel by pushing the face plate (2) until the plate snaps into place.
4. Install the heater control unit knobs.
5. Slide the ashtray into the guide.