This seems to be a common Q on these trucks! There are 2 bolts on the inside of the bed, (behind the light assembly), which means you may have to go under your bed liner if you have one. Sort of a pain! The entire assembly will pull out.
the plastic shield that covers the bulbs has screws that you can access with no trouble at all.
in the fuel tank, rt side of vehicle . access it through access hole behind/under rr seat,4 screws then top of tank will be visible.
There are two (2) lights directly above the license plate. Each light has two (2) screws. Remove these screws and the covers. Lights pop out with little effort. Replace bad bulbs with size 194 lights. These are approx $2 at walmart or an auto parts store. Once bulbs are replaced, reattach covers with the screws and you should be good to go.
Start from the inside. Insert plastic tool between A pillar and triangle plastic that covers it and separate. This will make all screws visible and accessible (3 in total)
it screws off
Pull out cup holder, remove two screws holding in faceplate, then pop it off. Screws for radio are how visible, remove them and slide the radio out! If you leave it out for more than an hour, you will need 'code' to reset it. (antitheft)
The 1992 Chevy Corvette front speaker covers are held in place with two retaining screws. Remove the retaining screws and the speaker covers will come off.
There is a large plastic protective cover on the underside of the front of the engine which covers the bottom of the engine from side to side. On the passenger side close to the front of the vehicle there is a rectangular access port (about 6" x 8") built into this plastic cover. The access port has a cover which is removed using two screws that are right beside each other. The port cover slips out after these screws are removed and the oil filter is visible as soon as the panel cover is off. Good luck! It is quite possible that yours does not have the underside engine cover, many do not. If not, the filter is plainly visible from the underside of the engine on the passenger side closer to the front.
I think that the 86 would be the same as my 85. Look in the back corner of the box, you should see 2 screws. Undo the screws and remove the tail lite assembly. The bulbs should be visible. Turn the connector 1/4 turn and the bulb will be there.
The tail light is attached to the car body by two screws and two pins. 1. Open the rear hatch to access the screws. 2. Remove The Screws (2) 3. Pull the lens straight back. This will require some force to overcome the pins that hold the other side.
The air filters for your engine are located inside the black box that is on top of the engine. You will need to remove the black box and then turn it up side down to access the torx screws. unscrew all the screws (the screws will stay in the upper box) and remove the covers and you can replace the air filters.
The headlight adjustment screws on a 2001 Nissan Altima are located on the sides and back of the headlight assembly. They allow for small changes to be made to the position of the beams.