The power antenna is held by one single bolt to the bracket that holds the RIM too(in your '94). Just open the trunk, remove the liner on that side (locate the plastic fasteners) and there is not much to explain - remove the bottom bolt and slide the antenna down. I did posted instructions regarding how to rebuild your power antenna if you think you are up for it here.
The taillight...depends if you are talking about the inner one (trunk lid mounted) or the outer ones.
Inner tail lights come out by partially removing the trunk lid liner and locate the 3 plastic wing nuts holding the tailight assembly. Before removing the wing nuts, on the bottom edge of the trunk lid (underneath the taillight) locate a plastic fastener (Christmas three style) that needs to be removed (pry it out with care, it could be stubborn). Once the clip and the 3 wing nuts are out the taillight comes out all you need is to disconnect the electrical connectors. Also if is you find the harness is not long enough just pull it along with the round rubber grommet, you get an extra 2-3 inches of slack. Don't forget to put the grommet back once you are done or you get water in your trunk.
Outer taillight, partially pull the liner directly behind the taillight locate the 3 wing nuts holding the taillight assembly attached to the car body. Then follow the instructions for the inner taillight (minus the bottom plastic clip).
Lights...I have good experience with PIAA light bulbs, you need 9005 for HI and 9006 for LO.
