Wiring of lights questions

I have yet to pull my dash off to install switches into the center of the dash, but I was wondering where yall would steal power from for 2 switches. I was considering splicing into the stock switches but if i could avoid damaging my wiring harness i would prefer that.

Also, what Gage wire would you recommend for the relay excitation voltage, and where would yall penetrate the firewall? I was gonna try to shimmy it threw the main wiring harness hole but I havent decided if there is enough room for multiple wires

Tis a 2018 taco offroad

 

I stole it from the trailer fuse using an add-a-fuse. Not towing anything anyways.

 

Figured if someone stumbles upon this there will be a mild explination as to where and how, and that would be on my build thread for my detailed rambling. but basically i stole the "on with vehicle" power from the cigarette lighter hole (dont ask how its not my proudest moment) then the other power in I ran from my fuse panel i build in the engine bay, then they got grounded in the engine bay.