How do I replace the Dash Lights on a 96 Camry? They have not worked for 2 years. Stopped working after a car stereo was installed.

Check all the fuses and go back two years and ask the installer where the mistake was made in their install.

First fuse I'd check is the 'tail' fuse locacated left side lower dash area.
Have you checked to see if the instument panel rheostat (dimmer)is even hooked up or turned off?
Illumination wire back of stereo is the most common mistake made in radio wiring.