I think this is more than a small problem. I was getting on the highway on July 31 at 5:10 pm when my horn blared until the fuse blew. Of course, it's Friday after 5 and no service center is available to look at it. That said, I replace the fuse and tap the horn. After a couple seconds, the fuse blows again. I notice that the low pitch horn is not sounding, though. I take it to the dealer on the following Tuesday and suggest the low pitch horn is bad.
They search the wiring and see that I have the beginnings of a Viper alarm wiring harness installed and immediately pass the buck off on that. Only problem is that the Viper 3902 alarm isn't completely developed and there isn't even an active control module attached to my vehicle, therefore no current draw or interference. The harness had also been there for over a month without any issue. Upon further inspection (and me prodding with them), the dealer finds that the low pitch horn is shorting out...hmm rocket science.
Next further problem, there is no horn available to replace my defective one. I have been waiting 6 weeks now with no answer when there will be a horn available.
I welcome all comments or suggestions.