Review on ACDelco D1978D High Note Horn - Genuine GM Original Equipment for Enhanced Performance by Brian Vasquez

The horn itself works as needed. But as others have pointed out, the wiring for my car (2003 Messenger) could have been better designed. I don't think there will be any problems with other cars. In any case, I chose not to bother with the wiring as I was lucky enough to be using my native wiring. I just swap out the horn itself. Symptom: A bad horn caused my horn fuse to blow, I decided to replace both the high and low horns, no more blown horn fuses. :)