I have a 77 camaro and sometimes when I make a left turn the horn honks. It does it on a right turn every so often. It started about 3 weeks ago and it is driving me crazy . Any ideas?

Welcome to Team Camaro!

Look at the photos in this thread...

http://www.camaros.net/forums/showthread.php?t=57790&highlight=horn+parts+order

The horn functions by grounding to complete the circuit. A wire runs up through the column to a plastic rotating assembly that has contacts within it. Theres a metal disk behind the horn button that flexes when the button is pushed, grounding the plate and making the horn blow.

After you see the pieces involved in the thread above, your appraoch should be to remove the button, unscrew the plate, and pull the steering wheel. Something in that assembly is worn or corroded, and is making contact when the wheel rotates and not just when the button is pushed.