Already working
Just followed the diagram I found here: https://guitarpedalparts.com/wp-content/uploads/2017/08/3PDT-LED-Wiring.pdf
Of course, after seeing the diagram everything seemed obvious

It certainly looks great, although it's a little bit of a hassle to fit.
Don't know if I would use it again for a baby build, but at least got me thinking about the 3PDT wiring
Just followed the diagram I found here: https://guitarpedalparts.com/wp-content/uploads/2017/08/3PDT-LED-Wiring.pdf
Of course, after seeing the diagram everything seemed obvious

It certainly looks great, although it's a little bit of a hassle to fit.
Don't know if I would use it again for a baby build, but at least got me thinking about the 3PDT wiring