Maybe I'm looking at that wrong. Hopefully someone else will chime in, but what's not connected is perhaps actually supposed to be the power/ground for the AIR divert? Looks to me like it's already connected to the AIR pump, AIR pump constantly works as it rotates (not clutched or anything) divert is the actual function, so it would stand to reason the connector on the pump is actually the divert valve.
Maybe you aren't looking for a valve, just another connector. (which is odd, why wouldn't it just be hard wired to the harness?)