Thanks @kbraby! Think that helps us solve it.
Brandon said he assumed the wire coming out of zing was control for air assist, but sounds like it’s actually interlock to be sure blower/air assist are on
Currently the switch next to zing is directly controlling blower and air assist with nothing plugged into grey box. Therefore the air assist interlock is stopping the laser from firing.
Need to change it so that blower and air assist and switch are plugged into grey box mounted on back of zing table. Will need to remake the switch and plug everything into grey box to get it working (he took apart the previous zing switch last night).
He said he’ll be up there late tonight to work on it unless someone else wants to take this on first.