The horn system wont work. I tried a new relay and fuse didnt help? on 2005 Lexus SC430

I used a light tester to confirm that no juice was getting to the horn. What do I try next?

1 answer 1 comment
CK PWR AT HORN SWITCH IN AIR BAG HOUSING, POSS BAD
is this a common failure? will it require removal of the coloum to repair this ?
is there a part that can be purchased and installed