Where is the backup light switch located on a 1999 Camry which failed to light on when you backup can you fix by myself?

its to the right and below where your oil cap is right behind the starter. It sits on top of the tranny and will have a clip and wire coming off of it. You'll need a 1" drive socket wrench and a 1 1/16" socket. You can find the switch for about $20.