You may have the wires for your horn crossed with the battery wire. This would cause the horn to go off any time the battery is connected.
why my horn stop blowing
under the battery.
I believe the horn is mounted below the battery tray
I believe the horn is mounted below the battery tray
Your battery and alternator need attention. It sounds as if the charging is faulty and your battery has degraded.
possibly the temperature out side was cold....if it was outside or inside without heat for awhile the air bag will squeeze on the horn relay, thus maikin the horn blow when you started to charge the battery.
I believe it is mounted underneath the battery tray
Palindrome for blowing horn: 'toot'.
Possibly underneath the battery tray
Horn button is a momentary switch. Yours sounds stuck. Check the contacts. Once it grounds, the horn blows & sounds grounded.
I THINK the horn is mounted below the battery tray
I believe the horn is mounted to the Explorer below the battery tray