Ford F-350 Safety

My Started Sticking On And Then Finally Blew The Fuse I Have Replaced With Good Fuse And Can Hear Clicking That Sounds Like A Relay But...

Horn Blows On Its Own...stops When The Door Is Opened, But Will Start In A Few Minutes...did This 6 Months Ago, Now Has Started Again...i...

Horn Goes Off Without Blowing It. Stops If I Open The Door, But Starts Again Later. Lights Don't Flash, Nother Else Goes Off.

1999 Ford F-350 Power Stroke V8 With Almost 200,000 Miles. When I Try To Start My Truck In The Morning It Takes 10-20 Minutes Of Warming Up...