How do you replace tag lights in 03 Buick Park Avenue?

From the inside of the trunk. Remove the carpet covering the taillight assembly and remove the plastic wing nuts that hold each side assy. in place. There should be 4 or 5 on each side. When these are removed the light assy. can be removed from the vehicle and you will have access to the bulb sockets. There is one bulb per side and they are a 194 bulbs. Hope this helps. Christopher