1973 Dodge Dart Sport Number of Horns

I have a 73 Dart Sport 340 h code. I am going nuts with the horn mine is missing. Is the horn under the battery tray? I got the master wiring diagram and it shows two horns between the two front headlights behind the grille. Seems it could be wrong.

Yup they are located under the battery tray. Whenever the radiator overflow bottle was added was when the horns were moved under the battery tray. Might have been in 1973 when that overflow was added.