Horn won't stop blowing. So I did a turbo install and had my battery of for awhile. When I hooked it back up the horn was stuck on so I just pulled the fuse. Been driving for awhile and forgot about it till some one wanted me to signal with three honks for a roll race. Figure I should fix it does anyone have any idea what it could be. Has anyone heard of this on these newer 5.0 mustangs?