Just another bit to add to what @MakerJim said.
Getting 12v for LEDs while having 24v for the Jackpot, is actually super easy if you got the Starter Kit, because the Starter Kit is doing something that reduces the voltage before sending power to the other end where the pendant lives.
I have 24v power supply feeding my Jackpot. I plugged in the starter kit’s PCB on the board side. It sends power over to the pendant side. I used my multimeter to measure the voltage coming from the PCB on the pendant side, and I think it was something like either 12v or 14v or some such. So, just split the power output that’s headed from the PCB on the pendant side, going towards the M5 dial, and use that for the LEDs.
Otherwise, if you are not using the starter kit, you could put a buck converter into the pendant, or near your board.
EDITED: I was apparently mistaken in thinking the PCB of the starter kit is reducing voltage, so the buck converter mention is the only part still valid here.