I find that with the civilian controls where the horn is (siren on/off location) that because I use it so infrequently I end up toggling the headlight.
I found a set of used police controls and one of my winter projects will be reverting to use the left control such that:
- horn is horn
- siren on/off becomes factory cruise on/off
- yelp becomes the odometer toggle
- garage door opener using odometer reset switch moves from where the mic input to the left side of the FLHP tank console where the odometer switch is currently
You can often find complete civilian handlebar switch/wiring sets on Ebay. There's several salvage yards that sell quite reasonably. But you will need to do some mods when converting the police bike. You will eliminate the clutch safety switch , you can simply twist the two wires together.
A wiring harness schematic from service manuals for police and standard controls is a must.