I've mounted a mini sound bomb tucked in the left fairing.

Used the thin mount bracket that came with it - I removed the circled bolt and slid the thin plate between the two parts, then re-inserted the bolt.

Ran a jumper cable from the original connection to the horn.

Under the plastic cover, across the top of the frame an down a gap near the radiator hoses on the left side.


Not as loud as the full unit but better than the original horn.
Hope this helps.
Lovetubs
Having just watched the video from Guy YMX on the Side Panels Gen 4 thread, I’d say it’d make the routing of the cables much easier.