u can adjust the guage light, its complicated, i had to have someone do it for me not so sure you can adjust the shift light brightness..thats not to adjust the brightness of the gauge. its to adjust the brightness of the shift light.
you can adjust the shift light brightness, i did on mine and you can either have it blink when you get to the rpms that you set it for, or you can have it stay on solid at the rpms you set it for. if you can change the brightness on the gauge thats news to me.:headscratu can adjust the guage light, its complicated, i had to have someone do it for me not so sure you can adjust the shift light brightness..