How do you replace brake light on 1981 caprice?

in my 1983 caprice..you have to take off the screws inside the trunk against the wall closest to where you are standing when you open the trunk...there should be about four rubber screws...and if you stick your head inside and look into each corner closest to you...there should be about 3 metal screws on each side...take those off...and once all the srews have been removed...you should be able to slide off the whole piece that contains the rear tail lights and turning signals...replace them as you normal would by turning the bulbs to the left...pulling them out...and placing a new bulb inside..