Airbag question
 

Yesterday my mustang rolled forward into a curb in a parking lot. The front bumper was at the just above the height of the curb. At contact the airbags in my car went off. It completely caught me off guard but there's nothing i can do about it. I have another set of airbags at home luckily. My question is how do I get the horn to turn off, i pulled the fuse as a temporary solution. Next how do I erase the airbag code? Then when I replace the airbags, am i going to need a new airbag module, or is the existing one fine?

any help would be appeciated... also, where is the airbag module located? And all of the sudden my tweeters are the only ones that produce sound, and if i wiggle the wires i can hear a little cracking on the other speakers? Anyone have any ideas on why this would be?