Hello all, I have a question about my 1989 245's cruise control. Recently I decided to play with the system to see why it wasn't working, and I discovered that the little air reservoir (or whatever it's called), was not hooked up. I figured this wasn't a big deal to fix, but I can't figure out how to hook it up. There are no stray hoses anywhere. My theory is that someone removed a 3 way splitter for some reason, which may be why a hose is missing. I have looked at many diagrams and have had no luck.

Also, the brake switch has been tested with a multimeter, and confirmed working.