Hello Everyone...I am a new owner of a Kingpin Tour. I would like to install some speakers on the handlebars and would like to connect the power amplifier to a switched (key "on") 12 volt power source. Does anyone have any suggestions as to where to connect the power lead ? On my previous bike (VStar 1100) I wired the amplifier to the hot leg of the horn, which was relatively easy.

You could do the same or try the headlight (hot side) as well

If your really keen bring the feed right off the ignition switch itself