Unscrewed three screws but lens wont come apart
SOURCE: 1977 chevy corvette wiring diagram
All the diagrams for your corvette can be found here:
http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528008370b
Headlight wiring is towards the bottom of the page.
Hope this helps, have fun wrenching on that vette.
SOURCE: 1972 corvette brake light bulb wont come out
Take a small piece of cloth and cover the bulb then squeeze it with a pair of pliers and break the bulb. Throw the cloth away. Safety glasses would be good here. Or wiggle the glass part untill it seperates from the base. You choose. Take an awl or a small screwdriver and get between the bulb base and the socket. Now put a small needle nose pliers into the opening squeezing the bulb base and twist the plliers rolling up the side of the base, decreasing it's diameter. Push and turn and the bulb will come out. Go to a plumbing shop or plumbing supply and buy a fitting brush for 1/2" copper fittings. Clean the corrosion out of the socket, put a coating of dielectric grease into the socket. Do the same to the other sockets if the bulbs in them will come out. If they won't, you know what to do. Former 64 Corvette owner. I miss my 31 Ford Tudor Sedan more!
SOURCE: brake lights 1977 chevy silverado
Take the bulb out and connect a 12 volt test light to a good ground.Place a board or something between the seat and the brake pedal to have the brake light stay on. Carefully place the tester inside the socket if you touch the side of the socket which is ground you will blow the fuse...sometimes you can use electrical tape to wrap around the stem as a safety measure, but make sure that you don't touch the sides which is ground for the brake light bulb. If the light comes on...this is telling me that you have voltage there. Now you can run a set of jumper cables or a long wire from the + side of the battery, connect one to the 12 volt test light and touch the side of the socket where the light goes in...if it lights you have ground. If the first tests fails, the color of the wire should be a dark green. The best place to start tracing it is right below the gas tank where it runs along the frame. Unwrap the tape and take your test light and pierce throught the dark green...you should have 12 volts there. If not keep moving towards the fuse box. If the second test fails, see if the socket is corrodid. If so take sand paper and clean it off real good and run the test fot the ground side again. If there still is no good ground, just run you a new ground wire from the fram and splice it into the ground side of the socket. Note when you are looking around the driver's side of the vehicle's fram...if you have daul mufflers...sometimes the wire gets melted that supplies power to the stop lights, so that would be a good place to look before you go anywhere else.
Contributor By eHow Contributing Writer
Article Rating: 
(70 Ratings)
Fix that broken tail light.
Replacing a dead bulb on your car is almost as easy as replacing a light bulb at home. Perform this simple maintenance and avoid the hassle of receiving a citation for a missing brake light
.
Unscrew the lens on the outside, or take off the plastic cover from inside the trunk, to reveal the bulb.
Unscrew the bulb. You'll have to push in and turn at the same time.
Clean the connection with a wire brush and/or wipe it clean with a rag if there's any corrosion.
Screw the new bulb into the empty socket. Again, you'll have to push in and turn simultaneously. Line up the tiny raised bumps on the base of the bulb in order to screw it in.
Test your work by stepping on the brakes and turning on the headlights while a friend watches the new bulb to make sure it lights up.
Unscrew the lens on the outside, or take off the plastic cover from inside the trunk, to reveal the bulb.
Step3
Unscrew the bulb. You'll have to push in and turn at the same time.
Step4
Take the bulb with you to the auto supply store to help you find an exact duplicate.
Step5
Clean the connection with a wire brush and/or wipe it clean with a rag if there's any corrosion.
Step6
Screw the new bulb into the empty socket. Again, you'll have to push in
and turn simultaneously. Line up the tiny raised bumps on the base of
the bulb in order to screw it in.
Step7
Replace the lens or the plastic cover.
Step8
Test your work by stepping on the brakes and turning on the headlights while a friend watches the new bulb to make sure it lights up.
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