[Enoch]

Chuck, just because it is in the assembly manual does not mean that is the way the production line process went. I have found several "inverted" pictures pertaining to the installation of Corvette parts in the past 20 years of working on them.
That makes it doubly hard for a "dyslexic"(sp?) restorer like myself. So I would not be suprised at all for the Camaro manual to have a few also.
So what I do in a case like this is to research this from several different angels.
1. Check out original undisturbed cars.

2.Use some deductive reasoning. All chevrolet horns have a part # on them. For left and right. As is the case with chevrolet they made it easy for us to know the difference from right and left. As the right side (passenger) is even and the left side (drivers) is odd. (I may have that reversed my dyslexia acting up again)

So once you know which side goes where, you need to determine which side goes up. Here you can find 2 clues. First there is a bend on the mounting flange, and it needs to be installed with the bend in the downward position. Otherwise you would have an interference problem with the hood. Second the bolts that mount the horns on have a large serrated washer. So if you look on your horns you can see the impression from the teeth in the mounting flange.

So adding up the information you can determine for yourself, the assembly manual is incorrect in this case. If you don't belive me check out the part #'s and impressions from the washers and make the decision for yourself.

BTW this is a great site for information I "Lurk + Learn" every day. Hope this help, Rich.