The switch on left of triple tree...Right is Driving lights
but the left seems to do nothing....Ok
I guess its for adding something?
So what did you do with yours?
What is a cool way to use it!
Still Tinkering here...winter won't leave.
27 degrees this A.M. with high of 43...Just cant enjoy that temp on the bike!!!
Hap

 

Left is the Horn on my Road King Classic.

Ed

 

Aux switch.
Might pop mine out and put in a button for my garage door.

 

It is an aux power switch, look in your service manual. Mie was disconnected from the factory, but can be connected inside the headlight assembly.

 

Horn????

 

LED's lights

 

If you chose to do nothing with it than you can at least do the driving light mod. I switched my driving light power to the acc power which runs right to the fuse box and it has its own 15 watt fuse.
I can now run my driving lights with the high beams and I have 55 watt yellow 886 bulbs in it. You want to talk about being seen these help a lot

 

I had added the driving lights mounted to the crash bar........Used that left switch for those. We wired a friends switch to control his LED accent lights.