What gear ratio is in my 1977 corvette - 1977 Chevrolet Corvette

Assuming the tires are close to standard (i.e., 275/60/R15), this means you probably have a 4.11 ratio rear end in your Corvette. This was a very popular ratio on Chevys for drag racing. For highway driving you would want a higher speed ratio, such as a 3.55 or 3.36 ratio (or even a 3.08), depending on what is available. which would give you 70 MPH, 75 MPH, or 80 MPH at 3000 rpm.
You'll need to change the speedometer driven gear in your transmission for your speedometer to be accurate if you change the gear ratio.

I suggest www.Willcox.com/Corvette . Great site.

I’m happy to assist further over the phone at https://www.6ya.com/expert/richard_9a19ee73dfa4686a

you bleed like you would the brake system. there is a bleeder screw on the slave cylinder that you bleed the system.

The fuse box on a 1977 corvette is located at the top of the kick panel on the drivers side. It is just below the dash on the outside wall..

http://willcoxcorvette.com/instructions/headlamp_and_wiper_small_parts_function_2.pdf REALLY GREAT INFO

I’m happy to assist further over the phone at https://www.6ya.com/expert/richard_9a19ee73dfa4686a

Look at the head lite switch for a burned resistor.

Yes, Theres a fuse for anything electrical on your vehical except the battery

check for power at the horn, the relay sends the ground

If your gear set is worn, replace the differential with one from a scrapyard.
It is very expensive and an exacting science to set new gears up. if noise is from either carrier side bearing it is possible to replace them but generally if there is debris inside the unit the pinion bearings will be affected as well, requiring re-setting of gears. Depending upon what you ask from your vehicle, this is a good opportunity to change ratios. If you don't need all the bottom end performance, you could opt for a 3.23 ratio. If you are looking for more "off the line" power then go to 4.11's. Don't forget though that anything but the exact match to yours will require a speedometer drive gear change .You cannot stop the noise without making a repair.

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.