The wire that goes to a horn. Which I don't have.It looks like a rim blow but the blow is missing around the inside rim of the wheel and the horn button bezel is wrong. What is that hanging out of the center of the wheel?
if you look on the back side of the center spoke youll see where the horn switch wire attaches to the rim blow switch (which on your wheel is pretty torn up) missing the center cap as well found on LOTS of 71 a bodies too
Unfortunately I don't think soIs there another horn switch and button that I can use with this steering wheel ?