When you open your trunk, you should see two screws holding on the tail light assy. Remove the two screws then gently tap out the tail light using the palm of your hand hitting away from the body. There are two metal pins which must come straight out towards the outside of the body. Then twist the socket out, pull out old bulb, push in new bulb, and reverse steps for installation. You may want to use some bulb grease on the socket for better connection and to make it easier to remove the bulb in the future...
It sounds to me like your bulbs are out. These bulbs have a lifespan just like the light bulbs in the lamps that you have at home. These are easy and cheap to replace, and you can usually access the bulbs from your trunk, if you own a car.
Using correct bulbs?
Check the: Bulbs Fuse Stop light switch
check the wires at brake light switch on brake pedal they are bad about breaking brake light switch
Working brake lights are important for safety reasons while driving. It is important to check all of the wiring, if the brake lights are not working and the fuses and bulbs have been checked.
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.
Remove the headlight assemblies and you will have access to the signal bulbs. See sources and related links below for bulb information.
There are many problems that come with owning a car. If a Left rear brake and turn signal do not work, a person should check the fuses, bulbs and wiring.
on some cars the tail lights and brake lights are totally different bulbs gain access to the bulbs and have someone push the brakes so that you can determine which bulbs are the brake lights and replace the tail lights
For the back side one you have to go into the trunk compartment and there you will need to unscrew the 4 10mm nuts that holds up the whole turn/brake light and then you will have access to the bulbs. For the front ones you have a little cover in the front of the turn sign, carefully lift it up to remove it and then you ll have access to the screw, unscrew it and pull out the signal then change the bulb.
I would check and make sure that you have the right light bulbs installed. For your brake lights, it may take a double filliment bulb. If you put a single filiment bulb in, the lights will remain on all the time. If your bulbs are correct, i would double check the stop switch which is right above the brake pedal. My 1994 requires 1157 bulbs for brake lights, and 1156 for everything else. (Reverse, Signal) Worst case scenario is that your master cylinder or brake booster is not holding adequate pressure, and is allowing your brake pedal to sag lower then it should, thus making the car think you are pressing the brake. Hope this helps!
Bad bulbs? Sockets corroded?