So you have yellow headlights... (92-94 T/E/L)
...the fix is simple!! Run to the store and pick up a small can of Mother's Mag and Aluminum Polish. Be sure to buy some shop tops, or better yet, a small 6" buffer. (The kind used for waxing cars) Now pop your hood. Remove the 2 10mm hex head bolts on the headlights inside the engine compartment. Using a phillps head screwdriver, unscrew the corner lenses. (far right and far left towards the front of the engine bay) Unplug all electrical connections, 2 on each headlight and one on each corner lense. Slide out the corner lenses by pulling them towards you. (front of the car) Remove the next bunch of 10mm hex heads holding the headlights in place behind the corner lenses. (2 for each light) Pull out the headlights.
Take your headlights to a flat surface and get a good amount of polish on each. You did get the polish didn't you? Start to rub it in with a shop towel and finish it off with a buffer, or some good hard rubbing. Buff and/or rub until the polish forms a haze over the lights. Wipe clean with a clean shop towel. Repeat the whole process until you are satisfied with your crystal clear headlights!!! (see pic above)