Anyone know which wire would be in charge of turning the led smd lights on and off with the ignition key?

What I'm trying to do is do like the vxr button in the insignia vxr does and change the dial lights to red when the sport button is pressed on and turn them off when pressed off. I currently have the red leds fitted and wired in on the sport button which works but it's currently displaying both colours red and blue.

P.s. it's not pin 19 or 29 as already tried them

Thanks in advance