[jbsmithtx]

A couple things to check:

1) Input voltage
2) The breakout board itself
3) Wiring (the solenoid wires usually have to be spliced)

And I remember now for some reason that our sidecar had gone out, and literally everything was working except our signal light and the pneumatics. I currently can't remember why, because our pneumatics was nowhere near connected to the digital sidecar. I searched into this problem for MONTHS, and after we swapped digital sidecars, it worked. Sidecars tend to be a little fragile.