Horn question

[Sonny]

I have a '70 Belvedere with one horn forward of the radiator support but missing the one in the engine compartment. Is the one I'm missing the high or low?
If you have one hit me up too.

 

[69Bee]

If you check, they should be labeled high or low

 

[WileERobby]

Look on the housing, it will either be molded as HI or LO. It's stamped on the outer circumference.