Using Tedâ€™s wiring information I actually did this.
I had a blank spot on the dash that didn't have a button EPS. I wired in a momentary style relay board so when I push the button it latches and stays latched until pushed again. I traced out the illumination wire and tapped it into the switch beside.
So now I can turn the warning off and on using a factory switch. If I could find someone that could engrave the surface of a switch I would use the blank I removed and had TV marked on it. Unfortunately I've had no luck yet.