Someone out there with an 07/08 Swift Challenger.When you switch the power to the pump on which is located above the entrance door does the green LED light come on,or does it only come on when you open a tap. My dealer said that it will light all the time to show that the pump is on. why should this be I know its on because Ive switch it on, I know if its off because the pump wont work. Can you help please. J.Lo