To the middle photo. I found a photo of a MiG-21SPS of the East German Air Force in my archiv, which is similar to the Soviet MiG-21PFM. Some instruments are on a different location, but this do not matter.
The top botton or switch has the label пуск ускорит , what means in german: Startbeschleunigung and in english: start of the accelerator. Also SPRD or in english RATO system.
Below the red button is a lable with сброс цели, what menas in german: Ziel zurücksetzen and in english: reset target. So i think it has something to do with the radar.
Whether it is illuminated, i think so, but I'm not sure.