My Mule Pro FXR did not come with a horn! But my buddie's 2020 Mule 4010 did! What was Kawasaki thinking? I pay almost $5K more and NO horn!
On the Mule Pro "F" & "D" series the factory wiring is 12v + connector for horn, plus jumper connector that goes to the horn switch. The other wire connector at the horn switch is ground.
Rather than pay Kawasaki $40 for a horn kit, I bought a $12 horn and $7 horn switch.