Help with Air Assist Solinoid

Hi all.

I have a new OMTech K40+ and would like to add external air assist using my compressor. I’m having trouble working out where to connect the solenoid so it can be operated by Lightburn. Does anyone know where it goes on the relay board?


Another board…

And I guess the controller?

Looking at the photo, there appears only one open place on the relay board.

Do you have any information that the air assist actually works via software?

This is the nicest looking K40 I’ve seen… looks nice inside, much more than I usually see.