Resurrecting this to add my experience with this problem.
I had the same problem with the clicking inside the relay box and no up or down with the window.
I opened the relay box from the connector end and checked the soldering to find one of the pins had cracked solder on the underside of the pcb board. Added more solder to this pin using a soldering iron and voila, window winds up and down.
If you're gonna replace the relay box, give this a go first.