Just pick up a brand new solenoid today, it doesn't come with the needle valve because the original owner give it to a friend. I use the JBJ needle valve but it doesn't work. One of the meter is at Zero, the one on the right as you looking at the solenoid. I don't know what is wrong with the darn thing. I used to have the JBJ for 10months but that thing die on me today because the needle valve doesn't release any air. Something may be stucking inside. So i replace it with another needle valve. The old JBJ with replacement needle valve work fine but the milwakee doesn't work even though it is brand new. Yes in did plug in the the power cord.