[unclear_physics]

By the way, your relay light should turn green when the pump is on. Also, make sure that your pressure switch isn't on the other side of the 60 PSI regulator or your pump will never turn on. Also, be a little careful of switching the leads on the pump because the pump might not like the wrong polarity (it wants +12v on the red wire) which could cause the pressure switch to "stick" inside until you put positive pressure on it.