"I have a 1962 valiant and it is missing the horns also. It looks like they are set up to go on the driver's side inner fenderwell. Is this the right place?"
They came with two horns, a high note and a low note. They were mirror images of each other so that each one would face forward. One horn mounts on each fenderwell, to threaded inserts attached to the sides of the fenderwell about halfway back in the engine compartment. There is a vertical bar-type mounting bracket that attaches to the fenderwell and to the horn.