I'm replacing my K40 control panel with a custom one.

I’m replacing my K40 control panel with a custom one. The current one has the digital power control and I’m replacing it with an analog pot and DVM display. I know how to connect this and the Test Fire button to the LPS but I can’t tell how the Laser On/Off switch and the associated LED should be connected. It appears that the Laser On/Off just kills 5V power to the panel.
Anyone have a schematic or know how to do this?

You will find everything you need to know here;

Schematics and help in doing such a conversion is as @HalfNormal suggests, on my blog. If you have trouble post here…