If you have a push type kill button used on most dirt bikes,just hook the horn + to one of the separate "accessory" hot wires,run the ground to the button. When you push it the switch will complete the circuit. Look at the top of the wiring harness for the two accessory wires. Dirt Cheap Yamaha, Honda, Arctic Cat & Polaris OEM Parts & Accessories – Cycle Parts Warehouse

 

Done and done.

 

Perfect!

 

I actually had one of those squeeze type horns on my scooter. It worked well enough.

 

Now that's funny right there!