I took a different approach, I found some waterproof momentary switches made by Zeta that are built into a billet 7/8" bar clamp half. I use one for PERC and one for the Kill switch. As I use ALTernative Impacts Titanium "T" top steering post, I have the switches on the bottom half so they are protected from everything but my finger when needed.
I'm still looking to source a sequencing relay to use one for the high / low beam switch and another for the hand / thumb warmers, but have yet to find a relay or smart circuit that will do that like the discontinued RSI box.