I totally misinterpreted the drawing. I really need to take a class on fundamentals of this stuff.

I recently installed a C10 BOB as I needed additional inputs for encoder and some proximity sensors. Perhaps using the outputs on that would be more productive than fighting the MX3660. Or perhaps I just should buy the other solenoids?

I may try wiring as per Maxspongebob’s drawing earlier in the thread. If I could at least get a consistent state on the relay that would be nice. Eventually I will be adding a few pneumatic actuators as well. Getting a drawbar or tool changer stuck in flux would probably be a bad time.