You can pick up the 24V off the controller as I did here but be sure to not draw too much, and be aware that this is not a supported mod.
Did you mean bitrunner or bitsetter ?
BitRunner reads the PWM signal from the controller, so you could in theory hook it up to a relay to light up a lamp, but you are in tinkering territory.
BitSetter triggers the controller’s probe input, so again in theory you could ready it, but it’s more tricky.
Overall I don’t think that second point of yours is going to be very easy to implement