I have installed three lights (60 Watt Bulbs) on the same line (wire) connected to one light switch. The fuse blew when I hit the switch. I’ve connected all of the white to white and black to black. I believe the problem may be with the ground. I’ve grounded each light fixture. I believe that I was just supposed to pig tail the ground to the ground in each light fixtures and only affix the actual ground wire in the switch box to the green ground nut. Is that correct? An informed response would be greatly appreciated!