For 1990-2009 cars

### Removal Procedure

1. Adjust the FADE ring to the middle position, where the sound is balanced equally between all speakers.
2. Remove the BASS/TREB knob radio. Refer to Radio Knobs - For All Radios .
3. Remove the FADE ring.

### Installation Procedure

1. Install the FADE (1) ring over the BASS/TREB (3) knob post with the FADE (1) ring in the middle position, where the sound is balanced equally between all speakers.
2. Install the BASS/TREB (3) knob. Refer to Radio Knobs - For All Radios .