[Binford]

With a coach that is 40 yrs old, who knows what previous owners may have substituted. Post pictures of the existing valves and setup. Otherwise we are all speculating based upon what we have which may not be what you have.

Those are pictures I took and drew the drawings before I removed any solenoids. The dash drawing and switches are as they are drawn yesterday. The wire color match the switch to the solenoid.