I hear the horn relay click, and have tested the horn to be good and checked
the fuses - is there some other link to check for the horn? Where is the
relay located - maybe behind the dash?

Also the owner's manual says there is a headlight chime, but I do not hear
one when the car is shutoff with the headlights on and the door open. Is
there anything in common with the chime, horn and a/c?

I am planning on replacing the a/c compressor after I verify voltage in the
a/c relay.