Unfortunately, same issue here. My RR 2024 has been in the dealer since 1st of October 2024, still haven't received it. This is the 2nd time i had to take my truck to the dealer and i am very disappointed with Ford, last time had high noises in the interior and it took them more than one month...
We have the Thai horn "horrible" in the middle east, i will try to change it soon.
have to see which cars horn fits without any extra connections, i don't think it's hard to change.