I made some changes on my SS9 today. I now have the stock horn wires going to a relay coil and am using the bike's 12 VDC (under the USB connector) to run the relay contacts to my dual horns. I found a decent place to mount them on the Headlight bracket, using the upper slots in the bracket to mount the horns in such a place where it doesn't interfere with the extreme left or right steering.
I have blue horns on order, but I only have red for now.
I also have a TMPS and GPS added powered from
one of these. Below are some photos.
Notice my GPS screen. It has a saved category for "ChargeFastDC" and another for "J1772 AC Charge" on the next page. Perhaps most people don't realize that new categories can easily be made on a Garmin GPS. I have saved categories for many things on mine.
-Don- Reno, NV