my father has owned 4 m's and i currently own an 88 Gran Fury. out of all M body cars i've come across all of them have dead horns! my car had a replacement horn from pep boys that the previous owner installed as two before died. it sounded awful but was very fun to toot.it worked for about a month until recently when it simply died. why do these cars kill their horns? is it the heat of the engines or a product of where they sit in the engine?