Stupid question: Rather than buy a new board and knobs to get the dot to illuminate on the knobs, can you just drill a hole through the face of the knob? Will it then pick up illumination from behind? Anyone tried this?
No, unless you replace the panel the knob won't light. The panel has a custom EL sheet that only lights where the graphics are. The new panel will have the additional EL bands on the underside of the knob to light it up. You could do a new panel and then drill your knobs, but you would have to fill the hole with something that will transmit the light through to the front if you want it to be bright.