Right behind dash board
Camry 1999 has only on bulb for both low and high beams.
Pull it out loosen the four screw and you will see the bulb I beleive it is h4 bulbs
Check the bulbs, the fuse and the brake light switch.
You have to take the whole front console off including all the plastic moldings, and finally get to the dash board. You can find the lights bulbs behind it. It took me 3+ hours to get this done. good luck.
Check bulbs Fuse Stop light switch
The Toyota Nation Camry forum has something on this.I think most of the bulbs are LEDs and cannot be changed out like an incandescent bulb.
one of the light bulbs in the rear of the car is out.
behind the carborater
Start with fuses then bulbs then wiring.
It means one of bulbs is failing or already failed.
Left rear wheel well inside the trunk. Probably yellow in color. Small 3x3 plastic box that house a small circuit board.
Headlight bulbs, high and low beam, parking light bulbs, signal light bulbs, brake light bulbs, dash light bulbs, interior light bulbs, plate light bulbs, etc.