Jag, I use that switch to turn on/off those Kuryi lights.
DECosse. When I was using the term in series, I was thinking to run the wiring from the Triumph lamps to the Kuryis on the crash bars. And yes a pic of a diagram would be helpful. It's been a long time since my 1968 Navy Basic Electronic and Electric Principals school and automotive/bike wiring is not my favorite sport. The Triumph laps come without bulbs so instead of getting the standard H3S I was considering LEDs. I have a pair of them I bought for my Nomad but they are the complete light kit. I'll take a pic of them today and post it. They were specifically for Harley lights but I figured they'd work in the Cobra spotlights on my Nomad but didn't look right so I set them aside.
I'm going to see if I can get H3 type bulbs, something like these: