You'll see.... Oh CDan beat me. I replaced mine with a functional one from CruiserYards.Ok, from a 2007 thread you commented on Dan:
You need to remove the steering wheel and then remove the combination switch and replace the horn contact pin (84312-12040). Pin on ToyotaPartsDeal is all of $7.71.
Now what/where is the combination switch? Will it be obvious when I get the pin? TIA!!!