One problem related to horn assembly has been reported for the 2007 Dodge Ram 2500. The most recently reported issues are listed below.
All of a sudden the windshield wipers and washer came on with out warning and blinded me right in the middle of a curve. Then engine quite and horn started blowing. I lost my steering and brakes. When I managed to get the truck stopped I was blocking one lane of traffic. Raised hood and the electrical box with fuses was burning. I diconnected my battery to stop electric flow. I had just come off of highway wher I had been going 70 miles an hour. If I had been going that fast at the time of electrical problems it would been really bad as I had two other people with me. One a 90 year old motherinlaw.