I'm either blind or stupid or BOTH....

My 46 Chevy didn't come with a horn when I bought it. I want to install a stock horn and stock horn mechanism. I understand how the horn button operates (provides the ground leg to complete the circuit), but I can't find the exit location of the wire itself. Does it travel down the steering column for a while or what? I can't find that wire anywhere, maybe it's missing????

Thanks in advance.

46Possum